biblatex-apa：句子大小写不起作用

Question

Biblatex-Apa 应该自动以句子大小写打印参考列表中的标题，但由于某种原因它不起作用（请注意冒号后的的小写 A）：

\documentclass{article}

\usepackage[american]{babel}
\usepackage[utf8]{inputenc}

\usepackage[autostyle]{csquotes}
\usepackage[style=apa, backend=biber, natbib=true, firstinits=true, uniquename=init]{biblatex} 
\DeclareLanguageMapping{american}{american-apa}

\begin{filecontents}{case.bib}

@ARTICLE{Saetre2010,
  author = {Saetre, Peter and Lundmark, Per and Wang, August and Hansen, Thomas
    and Rasmussen, Henrik B. and Djurovic, Srdjan and Melle, Ingrid and
    Andreassen, Ole A. and Werge, Thomas and Agartz, Ingrid and Hall,
    Hakan and Terenius, Lars and Jonsson, Erik G.},
  title = {The Tryptophan Hydroxylase 1 ({TPH1}) Gene, Schizophrenia Susceptibility,
    and Suicidal Behavior: A Multi-Centre Case-Control Study and Meta-Analysis},
  journal = {American Journal of Medical Genetics, Part B: Neuropsychiatric Genetics},
  year = {2010},
  volume = {153B},
  pages = {387--396},
}

\end{filecontents}
\addbibresource{case.bib}

\begin{document}

\nocite{*}

\printbibliography[]

\end{document}

Answer 1

正如 Audrey 所说，您应该将第二部分放在条目中subtitle。标题和副标题之间的分隔符是冒号。因此，您的示例可以修改如下：

@ARTICLE{Saetre2010,
  author = {Saetre, Peter and Lundmark, Per and Wang, August and Hansen, Thomas
    and Rasmussen, Henrik B. and Djurovic, Srdjan and Melle, Ingrid and
    Andreassen, Ole A. and Werge, Thomas and Agartz, Ingrid and Hall,
    Hakan and Terenius, Lars and Jonsson, Erik G.},
  title = {The Tryptophan Hydroxylase 1 ({TPH1}) Gene, Schizophrenia Susceptibility,
    and Suicidal Behavior},
  subtitle={A Multi-Centre Case-Control Study and Meta-Analysis},
  journal = {American Journal of Medical Genetics, Part B: Neuropsychiatric Genetics},
  year = {2010},
  volume = {153B},
  pages = {387--396},
}