Cite a theorem in beamer

Question

I want to cite a theorem from a reference book. I input the code in the context of beamer as follows:

\cite[Theorem 1]{reference book}

But it only shows the name of reference book without theorem 1. How to tackle this problem?

Answer 1

Natbib

Consider using the citet and citep commands with the natbib package.

Output

MWE

\documentclass{beamer}
\usepackage[numbers, sort&compress]{natbib}
\bibliographystyle{unsrtnat}
\begin{document}
\begin{frame}{Some references}
Some results from \citet[Theorem 10.22]{kloeden1999numerical}, for more details see \citep[Theorem~10.22]{kloeden1999numerical}.
\vfill
\bibliography{references}
\end{frame}
\end{document}

If using biblatex

The same holds here, where we for convenience I use the option natbib=true, which gives

using

\documentclass{beamer}
\usepackage[backend=biber,style=numeric,natbib=true]{biblatex}
\addbibresource{sample.bib} 
\begin{document}
\begin{frame}{Something}
We see what \citet[Section~1]{einstein} has to say can compare \cite[Section~1]{einstein} with \citep[Section~1]{einstein}.
\printbibliography
\end{frame}
\end{document}