diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4c4fc27..58367e7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 新增选项 `link.journal` 允许在期刊题名添加超链接（[#144](https://github.com/zepinglee/gbt7714-bibtex-style/issues/144)）。
 
+### Changed
+
+`@inbook` 改为按照是否有 `booktitle` 选择“专著”或“专著的吸出文献”格式（[tuna/thuthesis#930](https://github.com/tuna/thuthesis/issues/930)）。
+
 ## Fixed
 
 修复 `not brace-balanced` 的警告（[#113](https://github.com/zepinglee/gbt7714-bibtex-style/issues/113)）。
diff --git a/gbt7714-2005-author-year.bst b/gbt7714-2005-author-year.bst
index b54917c..834cba3 100644
--- a/gbt7714-2005-author-year.bst
+++ b/gbt7714-2005-author-year.bst
@@ -10,7 +10,7 @@
 %% https://github.com/zepinglee/gbt7714-bibtex-style
 %% Version: 2022/10/03 v2.1.5
 %% -------------------------------------------------------------------
-%% Copyright (C) 2016--2023 by Zeping Lee <zepinglee AT gmail.com>
+%% Copyright (C) 2016--2024 by Zeping Lee <zepinglee AT gmail.com>
 %% -------------------------------------------------------------------
 %% This file may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either version 1.3c
@@ -747,7 +747,7 @@ FUNCTION {editor.full}
 
 FUNCTION {make.full.names}
 { type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.full
     { type$ "collection" =
@@ -2050,7 +2050,12 @@ FUNCTION {dataset}
   electronic
 }
 
-FUNCTION {inbook} { book }
+FUNCTION {inbook} {
+  booktitle empty$
+    'book
+    'incollection
+  if$
+}
 
 FUNCTION {inproceedings}
 { "C" set.entry.mark
@@ -2291,7 +2296,7 @@ FUNCTION {editor.key.organization.label}
 FUNCTION {calc.short.authors}
 { "" 'short.label :=
   type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.key.label
     { type$ "collection" =
@@ -2493,7 +2498,7 @@ FUNCTION {presort}
   "    "
   *
   type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.sort
     { type$ "collection" =
diff --git a/gbt7714-2005-numerical.bst b/gbt7714-2005-numerical.bst
index 00b0f49..67be21a 100644
--- a/gbt7714-2005-numerical.bst
+++ b/gbt7714-2005-numerical.bst
@@ -10,7 +10,7 @@
 %% https://github.com/zepinglee/gbt7714-bibtex-style
 %% Version: 2022/10/03 v2.1.5
 %% -------------------------------------------------------------------
-%% Copyright (C) 2016--2023 by Zeping Lee <zepinglee AT gmail.com>
+%% Copyright (C) 2016--2024 by Zeping Lee <zepinglee AT gmail.com>
 %% -------------------------------------------------------------------
 %% This file may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either version 1.3c
@@ -737,7 +737,7 @@ FUNCTION {editor.full}
 
 FUNCTION {make.full.names}
 { type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.full
     { type$ "collection" =
@@ -2040,7 +2040,12 @@ FUNCTION {dataset}
   electronic
 }
 
-FUNCTION {inbook} { book }
+FUNCTION {inbook} {
+  booktitle empty$
+    'book
+    'incollection
+  if$
+}
 
 FUNCTION {inproceedings}
 { "C" set.entry.mark
@@ -2281,7 +2286,7 @@ FUNCTION {editor.key.organization.label}
 FUNCTION {calc.short.authors}
 { "" 'short.label :=
   type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.key.label
     { type$ "collection" =
diff --git a/gbt7714-author-year.bst b/gbt7714-author-year.bst
index 931fcfe..093e21f 100644
--- a/gbt7714-author-year.bst
+++ b/gbt7714-author-year.bst
@@ -10,7 +10,7 @@
 %% https://github.com/zepinglee/gbt7714-bibtex-style
 %% Version: 2022/10/03 v2.1.5
 %% -------------------------------------------------------------------
-%% Copyright (C) 2016--2023 by Zeping Lee <zepinglee AT gmail.com>
+%% Copyright (C) 2016--2024 by Zeping Lee <zepinglee AT gmail.com>
 %% -------------------------------------------------------------------
 %% This file may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either version 1.3c
@@ -747,7 +747,7 @@ FUNCTION {editor.full}
 
 FUNCTION {make.full.names}
 { type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.full
     { type$ "collection" =
@@ -2050,7 +2050,12 @@ FUNCTION {dataset}
   electronic
 }
 
-FUNCTION {inbook} { book }
+FUNCTION {inbook} {
+  booktitle empty$
+    'book
+    'incollection
+  if$
+}
 
 FUNCTION {inproceedings}
 { "C" set.entry.mark
@@ -2291,7 +2296,7 @@ FUNCTION {editor.key.organization.label}
 FUNCTION {calc.short.authors}
 { "" 'short.label :=
   type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.key.label
     { type$ "collection" =
@@ -2493,7 +2498,7 @@ FUNCTION {presort}
   "    "
   *
   type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.sort
     { type$ "collection" =
diff --git a/gbt7714-numerical.bst b/gbt7714-numerical.bst
index 8f65546..30f9ed2 100644
--- a/gbt7714-numerical.bst
+++ b/gbt7714-numerical.bst
@@ -10,7 +10,7 @@
 %% https://github.com/zepinglee/gbt7714-bibtex-style
 %% Version: 2022/10/03 v2.1.5
 %% -------------------------------------------------------------------
-%% Copyright (C) 2016--2023 by Zeping Lee <zepinglee AT gmail.com>
+%% Copyright (C) 2016--2024 by Zeping Lee <zepinglee AT gmail.com>
 %% -------------------------------------------------------------------
 %% This file may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either version 1.3c
@@ -737,7 +737,7 @@ FUNCTION {editor.full}
 
 FUNCTION {make.full.names}
 { type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.full
     { type$ "collection" =
@@ -2040,7 +2040,12 @@ FUNCTION {dataset}
   electronic
 }
 
-FUNCTION {inbook} { book }
+FUNCTION {inbook} {
+  booktitle empty$
+    'book
+    'incollection
+  if$
+}
 
 FUNCTION {inproceedings}
 { "C" set.entry.mark
@@ -2281,7 +2286,7 @@ FUNCTION {editor.key.organization.label}
 FUNCTION {calc.short.authors}
 { "" 'short.label :=
   type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.key.label
     { type$ "collection" =
diff --git a/gbt7714.dtx b/gbt7714.dtx
index 79596e2..277a125 100644
--- a/gbt7714.dtx
+++ b/gbt7714.dtx
@@ -2232,7 +2232,7 @@ FUNCTION {editor.full}
 
 FUNCTION {make.full.names}
 { type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.full
     { type$ "collection" =
@@ -3844,10 +3844,16 @@ FUNCTION {dataset}
 %
 %       Optional: volume or number, series, type, address, edition, month, note
 %
-% inbook 类是不含 booktitle 域的，所以不应该适用于“专著中的析出文献”，而应该是专
-% 著，即 book 类。
+% 原生 BibTeX 的数据模型中 \texttt{@inbook} 不含 \texttt{booktitle} ，
+% 按照“专著”处理。而 biblatex 的 \texttt{@inbook} 跟 \texttt{incollection} 一样。
+% 按照“专著的析出文献”处理。
 %    \begin{macrocode}
-FUNCTION {inbook} { book }
+FUNCTION {inbook} {
+  booktitle empty$
+    'book
+    'incollection
+  if$
+}
 
 %    \end{macrocode}
 %
@@ -4297,7 +4303,7 @@ FUNCTION {editor.key.organization.label}
 FUNCTION {calc.short.authors}
 { "" 'short.label :=
   type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.key.label
     { type$ "collection" =
@@ -4571,7 +4577,7 @@ FUNCTION {presort}
   "    "
   *
   type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.sort
     { type$ "collection" =
diff --git a/gbt7714.sty b/gbt7714.sty
index 1bab954..7076c6c 100644
--- a/gbt7714.sty
+++ b/gbt7714.sty
@@ -10,7 +10,7 @@
 %% https://github.com/zepinglee/gbt7714-bibtex-style
 %% Version: 2022/10/03 v2.1.5
 %% -------------------------------------------------------------------
-%% Copyright (C) 2016--2023 by Zeping Lee <zepinglee AT gmail.com>
+%% Copyright (C) 2016--2024 by Zeping Lee <zepinglee AT gmail.com>
 %% -------------------------------------------------------------------
 %% This file may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either version 1.3c
diff --git a/variants/thu/thuthesis-author-year.bst b/variants/thu/thuthesis-author-year.bst
index 9514668..84c338d 100644
--- a/variants/thu/thuthesis-author-year.bst
+++ b/variants/thu/thuthesis-author-year.bst
@@ -10,7 +10,7 @@
 %% https://github.com/zepinglee/gbt7714-bibtex-style
 %% Version: 2022/10/03 v2.1.5
 %% -------------------------------------------------------------------
-%% Copyright (C) 2016--2023 by Zeping Lee <zepinglee AT gmail.com>
+%% Copyright (C) 2016--2024 by Zeping Lee <zepinglee AT gmail.com>
 %% -------------------------------------------------------------------
 %% This file may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either version 1.3c
@@ -747,7 +747,7 @@ FUNCTION {editor.full}
 
 FUNCTION {make.full.names}
 { type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.full
     { type$ "collection" =
@@ -2050,7 +2050,12 @@ FUNCTION {dataset}
   electronic
 }
 
-FUNCTION {inbook} { book }
+FUNCTION {inbook} {
+  booktitle empty$
+    'book
+    'incollection
+  if$
+}
 
 FUNCTION {inproceedings}
 { "C" set.entry.mark
@@ -2291,7 +2296,7 @@ FUNCTION {editor.key.organization.label}
 FUNCTION {calc.short.authors}
 { "" 'short.label :=
   type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.key.label
     { type$ "collection" =
@@ -2493,7 +2498,7 @@ FUNCTION {presort}
   "    "
   *
   type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.sort
     { type$ "collection" =
diff --git a/variants/thu/thuthesis-bachelor.bst b/variants/thu/thuthesis-bachelor.bst
index fd22e2c..39c1d02 100644
--- a/variants/thu/thuthesis-bachelor.bst
+++ b/variants/thu/thuthesis-bachelor.bst
@@ -10,7 +10,7 @@
 %% https://github.com/zepinglee/gbt7714-bibtex-style
 %% Version: 2022/10/03 v2.1.5
 %% -------------------------------------------------------------------
-%% Copyright (C) 2016--2023 by Zeping Lee <zepinglee AT gmail.com>
+%% Copyright (C) 2016--2024 by Zeping Lee <zepinglee AT gmail.com>
 %% -------------------------------------------------------------------
 %% This file may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either version 1.3c
@@ -737,7 +737,7 @@ FUNCTION {editor.full}
 
 FUNCTION {make.full.names}
 { type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.full
     { type$ "collection" =
@@ -2040,7 +2040,12 @@ FUNCTION {dataset}
   electronic
 }
 
-FUNCTION {inbook} { book }
+FUNCTION {inbook} {
+  booktitle empty$
+    'book
+    'incollection
+  if$
+}
 
 FUNCTION {inproceedings}
 { "C" set.entry.mark
@@ -2281,7 +2286,7 @@ FUNCTION {editor.key.organization.label}
 FUNCTION {calc.short.authors}
 { "" 'short.label :=
   type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.key.label
     { type$ "collection" =
diff --git a/variants/thu/thuthesis-numeric.bst b/variants/thu/thuthesis-numeric.bst
index 2d3018e..7782f62 100644
--- a/variants/thu/thuthesis-numeric.bst
+++ b/variants/thu/thuthesis-numeric.bst
@@ -10,7 +10,7 @@
 %% https://github.com/zepinglee/gbt7714-bibtex-style
 %% Version: 2022/10/03 v2.1.5
 %% -------------------------------------------------------------------
-%% Copyright (C) 2016--2023 by Zeping Lee <zepinglee AT gmail.com>
+%% Copyright (C) 2016--2024 by Zeping Lee <zepinglee AT gmail.com>
 %% -------------------------------------------------------------------
 %% This file may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either version 1.3c
@@ -737,7 +737,7 @@ FUNCTION {editor.full}
 
 FUNCTION {make.full.names}
 { type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.full
     { type$ "collection" =
@@ -2040,7 +2040,12 @@ FUNCTION {dataset}
   electronic
 }
 
-FUNCTION {inbook} { book }
+FUNCTION {inbook} {
+  booktitle empty$
+    'book
+    'incollection
+  if$
+}
 
 FUNCTION {inproceedings}
 { "C" set.entry.mark
@@ -2281,7 +2286,7 @@ FUNCTION {editor.key.organization.label}
 FUNCTION {calc.short.authors}
 { "" 'short.label :=
   type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.key.label
     { type$ "collection" =
diff --git a/variants/ucas/ucasthesis-author-year.bst b/variants/ucas/ucasthesis-author-year.bst
index cdaaf83..1569cb9 100644
--- a/variants/ucas/ucasthesis-author-year.bst
+++ b/variants/ucas/ucasthesis-author-year.bst
@@ -10,7 +10,7 @@
 %% https://github.com/zepinglee/gbt7714-bibtex-style
 %% Version: 2022/10/03 v2.1.5
 %% -------------------------------------------------------------------
-%% Copyright (C) 2016--2023 by Zeping Lee <zepinglee AT gmail.com>
+%% Copyright (C) 2016--2024 by Zeping Lee <zepinglee AT gmail.com>
 %% -------------------------------------------------------------------
 %% This file may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either version 1.3c
@@ -747,7 +747,7 @@ FUNCTION {editor.full}
 
 FUNCTION {make.full.names}
 { type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.full
     { type$ "collection" =
@@ -2050,7 +2050,12 @@ FUNCTION {dataset}
   electronic
 }
 
-FUNCTION {inbook} { book }
+FUNCTION {inbook} {
+  booktitle empty$
+    'book
+    'incollection
+  if$
+}
 
 FUNCTION {inproceedings}
 { "C" set.entry.mark
@@ -2291,7 +2296,7 @@ FUNCTION {editor.key.organization.label}
 FUNCTION {calc.short.authors}
 { "" 'short.label :=
   type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.key.label
     { type$ "collection" =
@@ -2493,7 +2498,7 @@ FUNCTION {presort}
   "    "
   *
   type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.sort
     { type$ "collection" =
diff --git a/variants/ucas/ucasthesis-numerical.bst b/variants/ucas/ucasthesis-numerical.bst
index 918ef2d..dd5e91e 100644
--- a/variants/ucas/ucasthesis-numerical.bst
+++ b/variants/ucas/ucasthesis-numerical.bst
@@ -10,7 +10,7 @@
 %% https://github.com/zepinglee/gbt7714-bibtex-style
 %% Version: 2022/10/03 v2.1.5
 %% -------------------------------------------------------------------
-%% Copyright (C) 2016--2023 by Zeping Lee <zepinglee AT gmail.com>
+%% Copyright (C) 2016--2024 by Zeping Lee <zepinglee AT gmail.com>
 %% -------------------------------------------------------------------
 %% This file may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either version 1.3c
@@ -737,7 +737,7 @@ FUNCTION {editor.full}
 
 FUNCTION {make.full.names}
 { type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.full
     { type$ "collection" =
@@ -2040,7 +2040,12 @@ FUNCTION {dataset}
   electronic
 }
 
-FUNCTION {inbook} { book }
+FUNCTION {inbook} {
+  booktitle empty$
+    'book
+    'incollection
+  if$
+}
 
 FUNCTION {inproceedings}
 { "C" set.entry.mark
@@ -2281,7 +2286,7 @@ FUNCTION {editor.key.organization.label}
 FUNCTION {calc.short.authors}
 { "" 'short.label :=
   type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.key.label
     { type$ "collection" =
diff --git a/variants/ustc/ustcthesis-authoryear.bst b/variants/ustc/ustcthesis-authoryear.bst
index cd95621..e8bdfe1 100644
--- a/variants/ustc/ustcthesis-authoryear.bst
+++ b/variants/ustc/ustcthesis-authoryear.bst
@@ -10,7 +10,7 @@
 %% https://github.com/zepinglee/gbt7714-bibtex-style
 %% Version: 2022/10/03 v2.1.5
 %% -------------------------------------------------------------------
-%% Copyright (C) 2016--2023 by Zeping Lee <zepinglee AT gmail.com>
+%% Copyright (C) 2016--2024 by Zeping Lee <zepinglee AT gmail.com>
 %% -------------------------------------------------------------------
 %% This file may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either version 1.3c
@@ -747,7 +747,7 @@ FUNCTION {editor.full}
 
 FUNCTION {make.full.names}
 { type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.full
     { type$ "collection" =
@@ -2050,7 +2050,12 @@ FUNCTION {dataset}
   electronic
 }
 
-FUNCTION {inbook} { book }
+FUNCTION {inbook} {
+  booktitle empty$
+    'book
+    'incollection
+  if$
+}
 
 FUNCTION {inproceedings}
 { "C" set.entry.mark
@@ -2291,7 +2296,7 @@ FUNCTION {editor.key.organization.label}
 FUNCTION {calc.short.authors}
 { "" 'short.label :=
   type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.key.label
     { type$ "collection" =
@@ -2493,7 +2498,7 @@ FUNCTION {presort}
   "    "
   *
   type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.sort
     { type$ "collection" =
diff --git a/variants/ustc/ustcthesis-numerical.bst b/variants/ustc/ustcthesis-numerical.bst
index f09353a..eebcd30 100644
--- a/variants/ustc/ustcthesis-numerical.bst
+++ b/variants/ustc/ustcthesis-numerical.bst
@@ -10,7 +10,7 @@
 %% https://github.com/zepinglee/gbt7714-bibtex-style
 %% Version: 2022/10/03 v2.1.5
 %% -------------------------------------------------------------------
-%% Copyright (C) 2016--2023 by Zeping Lee <zepinglee AT gmail.com>
+%% Copyright (C) 2016--2024 by Zeping Lee <zepinglee AT gmail.com>
 %% -------------------------------------------------------------------
 %% This file may be distributed and/or modified under the
 %% conditions of the LaTeX Project Public License, either version 1.3c
@@ -737,7 +737,7 @@ FUNCTION {editor.full}
 
 FUNCTION {make.full.names}
 { type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.full
     { type$ "collection" =
@@ -2040,7 +2040,12 @@ FUNCTION {dataset}
   electronic
 }
 
-FUNCTION {inbook} { book }
+FUNCTION {inbook} {
+  booktitle empty$
+    'book
+    'incollection
+  if$
+}
 
 FUNCTION {inproceedings}
 { "C" set.entry.mark
@@ -2281,7 +2286,7 @@ FUNCTION {editor.key.organization.label}
 FUNCTION {calc.short.authors}
 { "" 'short.label :=
   type$ "book" =
-  type$ "inbook" =
+  type$ "inbook" = booktitle empty$ not and
   or
     'author.editor.key.label
     { type$ "collection" =