答案1
您可以像这样解决该问题:
\documentclass{beamer}
\usepackage[style=authoryear]{biblatex}
\usetheme{Warsaw}
\addbibresource{biblatex-examples.bib}
\begin{document}
\begin{frame}
\begin{block}{This is a citation\footnote[frame]{\fullcite{knuth:ct}}.}
content...
\end{block}
\end{frame}
\begin{frame}
\frametitle{References}
\printbibliography
\end{frame}
\end{document}