biblatex APA 样式修改

Question

对于我的最终论文，我需要使用稍微修改过的 APA 格式。在详细介绍之前，我想向您展示一个 MWE：

\documentclass[12pt]{scrreprt} 
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc} 
\usepackage[ngerman]{babel}
\usepackage{csquotes} 
\usepackage[%
backend=biber,
style=authoryear-comp,
bibstyle=apa]{biblatex}   
\DeclareLanguageMapping{ngerman}{ngerman-apa}
\DefineBibliographyStrings{ngerman}{andothers={et\ \addabbrvspace al\adddot}}

\usepackage{filecontents} 
\begin{filecontents}{literatur.bib} 
@book{XYZ2010, 
 author = {Andrew Alphason and Bertram Betason and Christian Gammason}, 
 year = {2010}, 
 title = {{Ein Testbuch}},
 publisher = {Springer},
 address = {Stuttgart}
}
@book{XYZ2011,
 editor = {Andrew Alphason and Bertram Betason and Christian Gammason},
 year = {2011},
 title = {{Ein Sammelwerk}},
 publisher = {Springer},
 address = {Stuttgart},
}
@incollection{XYZ2012,
 title = {{Meine kleine Testdatei}},
 author = {Dirk Deltason},
 editor = {Andrew Alphason and Bertram Betason and Christian Gammason},
 year = {2012},
 booktitle = {{Ein Sammelwerk}},
 publisher = {Springer},
 address = {Stuttgart}, 
}
@incollection{XYZ2013,
 title = {{Meine kleine Testdatei}},
 author = {Dirk Deltason},
 editor = {Andrew Alphason and Bertram Betason},
 year = {2013},
 booktitle = {{Ein Sammelwerk}},
 publisher = {Springer},
 address = {Stuttgart}, 
}
@book{XYZ2014a, 
 author = {Phil Phison and Bertram Betason}, 
 year = {2014}, 
 title = {{Ein Testbuch}},
 publisher = {Springer},
 address = {Stuttgart},
} 
@book{XYZ2014b, 
 author = {{Fictional Institution}}, 
 year = {2014}, 
 title = {{Ein Testbuch}},
 publisher = {Springer},
 address = {Stuttgart},
}
@incollection{XYZ2014c,
 title = {{Meine kleine Testdatei}},
 author = {Dirk Deltason and Ezra Epsilonson},
 editor = {Andrew Alphason and Bertram Betason},
 year = {2014},
 booktitle = {{Ein Sammelwerk}},
 publisher = {Springer},
 address = {Stuttgart},
}
\end{filecontents} 
\bibliography{literatur} 

\begin{document} 
\parencite{XYZ2010,XYZ2011,XYZ2012,XYZ2013,XYZ2014a,XYZ2014b,XYZ2014c}
\printbibliography 
\end{document}

我需要改变的是：

1. 当参考书目条目的起始位置有 2 个或 2 个以上的作者/编辑时，应该在“&”前加一个逗号。
2. 如果编辑者出现在后面，如 MWE 中的条目 3 和 4，则在有超过 2 个编辑者的情况下，在“&”之前应该只有一个逗号。这里只有 2 个编辑者，所以没有逗号。不要问我为什么，我就是必须这样做！
3. APA 通常会在作者/编辑/机构和年份之间打印一个句号（在括号中）。我不能在那里插入句号。我该如何删除它？在示例中，条目 2 中“(Hrsg.)”后面的句号是不允许的。

我插入了输出的图片。我用红色表示错误，用绿色表示正确。

编辑信息：我添加了一些例子来说明我正在谈论的问题。

Answer 1

给你;

\documentclass[12pt]{scrreprt}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[ngerman]{babel}
\usepackage{csquotes}
\usepackage[%
backend=biber,
style=authoryear-comp,
bibstyle=apa]{biblatex}
\DeclareLanguageMapping{ngerman}{ngerman-apa}
\DefineBibliographyStrings{ngerman}{andothers={et\ \addabbrvspace al\adddot}}

\usepackage{filecontents}
\begin{filecontents}{literatur.bib}
@book{XYZ2010,
 author = {Andrew Alphason and Bertram Betason and Christian Gammason},
 year = {2010},
 title = {{Ein Testbuch}},
 publisher = {Springer},
 address = {Stuttgart}
}
@book{XYZ2011,
 editor = {Andrew Alphason and Bertram Betason and Christian Gammason},
 year = {2011},
 title = {{Ein Sammelwerk}},
 publisher = {Springer},
 address = {Stuttgart},
}
@incollection{XYZ2012,
 title = {{Meine kleine Testdatei}},
 author = {Dirk Deltason},
 editor = {Andrew Alphason and Bertram Betason and Christian Gammason},
 year = {2012},
 booktitle = {{Ein Sammelwerk}},
 publisher = {Springer},
 address = {Stuttgart},
}
@incollection{XYZ2013,
 title = {{Meine kleine Testdatei}},
 author = {Dirk Deltason},
 editor = {Andrew Alphason and Bertram Betason},
 year = {2013},
 booktitle = {{Ein Sammelwerk}},
 publisher = {Springer},
 address = {Stuttgart},
}
\end{filecontents}

\addbibresource{literatur.bib}

\usepackage{xpatch}

 \DefineBibliographyExtras{ngerman}{\def\finalandcomma{\addcomma}}

\xpatchbibmacro{editorinauthpos}{%
       \clearname{editor}%
       \setunit{\adddot\addspace}%
}{%
       \clearname{editor}%
       \setunit{\addspace}%
}{}{}

\begin{document}

\parencite{XYZ2010,XYZ2011,XYZ2012,XYZ2013}
\printbibliography

\end{document}