参考资料（来源）直接在标题下

Question

有没有办法直接在图形下方写上图形的参考？

\documentclass{article}
\usepackage[ngerman]{babel}
\usepackage{filecontents}
\usepackage[backend=biber, citestyle=authoryear]{biblatex}
\addbibresource{my.bib}
\usepackage{caption}
\usepackage[demo]{graphics}
\usepackage{booktabs}   

\begin{filecontents}{my.bib}
    @article{somebody-sgt,
      ids       =   {someone-sgt},
      author    =   {Somebody, Someone},
      title     =   {Some Great Title},
      journal   =   {Best Journal},
      year      =   3019,
      pages     =   {32--39},
      volume    =   3,
      number    =   4}
\end{filecontents}

\begin{document}

\begin{figure}[t!]
\centering
\includegraphics{whatever}
\caption[Test Test,]   {%
  \tabular[t]{@{}l@{}}Test Test, 1. Zeile\\%
  Test Test 2. Zeile \\%
  \hspace{-2.2cm} Quelle:~\cite[S. 23]{somebody-sgt} \endtabular \label{fig:MIMOKanal}}
\end{figure}





\end{document}

Answer 1

从我的角度来看，读者熟悉引用的概念。我的建议是将其添加到您的描述（标题）中，就像将其添加到普通文本中一样。

\documentclass{article}
\usepackage[ngerman]{babel}
\usepackage[backend=biber,
citestyle=authoryear
]{biblatex}
\addbibresource{\jobname.bib}
\usepackage{blindtext}   

\begin{filecontents}{\jobname.bib}
    @article{somebody-sgt,
      ids       =   {someone-sgt},
      author    =   {Somebody, Someone},
      title     =   {Some Great Title},
      journal   =   {Best Journal},
      year      =   3019,
      pages     =   {32--39},
      volume    =   3,
      number    =   4}
\end{filecontents}

\begin{document}

\blindtext
\begin{figure}
\centering
\rule{5cm}{4cm}
\caption[Test Test,]{This is some caption. It describes the
    graphic, which obviously is by someone else. To make that clear
    for everybody, we cite the entry. The reader will be
    experienced enough, to know what to do with those letters and
    numbers in
    parenthesis.~\autocite[S.~23]{somebody-sgt}\label{fig:MIMOKanal}}
\end{figure}

\end{document}

Answer 2

您可以使用该floatrow包：

\documentclass{article}
\usepackage[ngerman]{babel}

\usepackage{filecontents}
\usepackage[backend=biber, citestyle=authoryear]{biblatex}
   \addbibresource{my.bib}

\usepackage[justification=raggedright]{caption}
\usepackage{floatrow}

\usepackage[demo]{graphics}

\begin{filecontents}{my.bib}
    @article{somebody-sgt,
      ids       =   {someone-sgt},
      author    =   {Somebody, Someone},
      title     =   {Some Great Title},
      journal   =   {Best Journal},
      year      =   3019,
      pages     =   {32--39},
      volume    =   3,
      number    =   4}
\end{filecontents}

\begin{document}

\begin{figure}[t!]
\ffigbox[\FBwidth]{\caption[Test Test]{%
   \begin{tabular}[t]{@{}l@{}}
      Test Test, 1. Zeile \\
      Test Test, 2. Zeile \\
   \end{tabular}
   Quelle:~\cite[S. 23]{somebody-sgt}}
   }{\includegraphics{whatever}} \label{fig:MIMOKanal}
\end{figure}

\end{document}