# Biblatex - style authoryear - author in capital

I use biblatex with the authoryear style and want the author to be printed in my text (when citing) in capital letters, as well as in the bibliography at the end of my article. Is this possible?

• Welcome to TeX.SX! Please help us help you and add a minimal working example (MWE) that illustrates your problem. Reproducing the problem and finding out what the issue is will be much easier when we see compilable code, starting with \documentclass{...} and ending with \end{document} – BambOo Aug 11 '18 at 13:16
• Do you want all capitals just for family name or all name parts? – David Purton Aug 11 '18 at 13:17

You could redefine \mkbibnamefamily, \mkbibnamegiven, \mkbibnameprefix and \mkbibnamesuffix with your desired style. I opted for small caps in the following example because I don't think capital letters will look good:

\documentclass{article}

\usepackage[style=authoryear]{biblatex}

\usepackage{filecontents}
\begin{filecontents*}{\jobname.bib}
@book{knuth,
author       = {Knuth, Donald E.},
title        = {The {\TeX} book},
date         = 1984,
maintitle    = {Computers \& Typesetting},
volume       = {A},
langid       = {english},
langidopts   = {variant=american},
sortyear     = {1984-1},
sorttitle    = {Computers & Typesetting A},
indexsorttitle= {The TeXbook},
indextitle   = {\protect\TeX book, The},
shorttitle   = {\TeX book}
}

@article{einstein,
author = {Einstein, A.},
title = {Die Grundlage der allgemeinen Relativitätstheorie},
journal = {Annalen der Physik},
volume = {354},
number = {7},
doi = {10.1002/andp.19163540702},
pages = {769--822},
year = {1916}
}
\end{filecontents*}

\renewcommand*{\mkbibnamegiven}[1]{\textsc{#1}}
\renewcommand*{\mkbibnamefamily}[1]{\textsc{#1}}
\renewcommand*{\mkbibnameprefix}[1]{\textsc{#1}}
\renewcommand*{\mkbibnamesuffix}[1]{\textsc{#1}}

\begin{document}

\cite{einstein,knuth}

\printbibliography

\end{document}