Make the author names, the year, and the journal's volume number bold with biblatex/biber

Question

I'm using biber with the following options:

\usepackage[backend=biber,style=authoryear,maxbibnames=9,maxcitenames=2,uniquelist=false,autocite=inline]{biblatex}
\addbibresource{references.bib}

At the end of my tex document, I print the reference list:

\printbibliography[title={References}]

The journal editor required me to change the reference list such that the author names, the year, and the journal's volume number are bold. I couldn't find a clear way to do this. Is this possible? If so, any clue on how to do it?

Answer 1

Using the biblatex-ext styles (which provide drop-in replacements for the standard styles), we can easiy customize both the names the date format. (See How to (properly) remove the parentheses around the year in authoryear style? (v3)). Thanks to moewe for pointing out the simpler name code too (and for writing biblatex-ext).

\documentclass{article}
\usepackage[style=ext-authoryear,maxbibnames=9,maxcitenames=2,uniquelist=false,autocite=inline]{biblatex}

\addbibresource{biblatex-examples.bib}

\DeclareNameAlias{sortname}{family-given}
\DeclareNameWrapperFormat{sortname}{\mkbibbold{#1}}
\DeclareFieldFormat{biblabeldate}{\mkbibparens{\mkbibbold{#1}}}
\DeclareFieldFormat[article,periodical]{volume}{\mkbibbold{#1}}

\begin{document}
\autocite{herrmann,doody}

\printbibliography
\end{document}

If you want to do this using the apa style (which I don't recommend) the following code needs to be used:

\documentclass{article}
\usepackage[style=apa,maxbibnames=9,maxcitenames=2,uniquelist=false,autocite=inline]{biblatex}

\addbibresource{biblatex-examples.bib}
\DeclareNameFormat{apaauthor}{\mkbibbold{%
  \ifthenelse{\value{listcount}=\maxprtauth\AND\value{listcount}<\value{listtotal}}
    {\addcomma\addspace\ldots\addspace}
    {\ifthenelse{\value{listcount}>\maxprtauth\AND\value{listcount}<\value{listtotal}}
      {}
      {\iffieldannotation{uncertain}
        {\mkbibbrackets{\usebibmacro{name:apa:family-given}%
                         {\namepartfamily}%
                         {\namepartgiven}%
                         {\namepartgiveni}%
                         {\namepartprefix}%
                         {\namepartsuffix}?}}
        {\usebibmacro{name:apa:family-given}%
          {\namepartfamily}%
          {\namepartgiven}%
          {\namepartgiveni}%
          {\namepartprefix}%
          {\namepartsuffix}}}}%
    \ifthenelse{\value{listcount}=\value{listtotal}}%
      {\ifmorenames{\printdelim{andothersdelim}\bibstring{andothers}}{}}{}}}

\DeclareFieldFormat[article,periodical]{apadate}{%
  \ifboolexpr{ test {\ifdatecirca} or test {\ifdateuncertain} }
    {\printtext{\mkbibbrackets{\mkbibbold{#1}}}}
    {\printtext{\mkbibparens{\mkbibbold{#1}}}}}

\DeclareFieldFormat[article,periodical]{volume}{\mkbibbold{#1}}




\begin{document}
\autocite{herrmann,doody}


\printbibliography
\end{document}

Answer 2

You have to add some code to change the wanted author names, year and volume number to be bold (see marking <===== for important code with explanaition for its use) in your preamble:

\DeclareFieldFormat{date}{\mkbibbold{#1}} % <=========================== date 
\DeclareFieldFormat[article,periodical]{volume}{\mkbibbold{#1}} % <===== volume
\DeclareNameAlias{sortname}{first-last-bold}
\DeclareNameFormat{first-last-bold}{\mkbibbold{% <====================== name
  \ifgiveninits
    {\usebibmacro{name:given-family}{\namepartfamily}{\namepartgiveni}{\namepartprefix}{\namepartsuffix}}
    {\usebibmacro{name:given-family}{\namepartfamily}{\namepartgiven}{\namepartprefix}{\namepartsuffix}}%
  \usebibmacro{name:andothers}}}

So with the following complete mwe (please next time add one to your next question by your own -- it is then easier to help you!)

\RequirePackage{filecontents}
\begin{filecontents*}{\jobname.bib}
@article{ahlswede2000network,
  title={Network information flow},
  author={Ahlswede, Rudolf and Cai, Ning and Li, Shuo-Yen Robert and 
          Yeung, Raymond W},
  journal={Information Theory, IEEE Transactions on},
  volume={46},
  number={4},
  pages={1204--1216},
  year={2000},
  publisher={IEEE},
}
@article{einstein,
    author =       "Albert Einstein",
    title =        "{Zur Elektrodynamik bewegter K{\"o}rper}. ({German})
    [{On} the electrodynamics of moving bodies]",
    journal =      "Annalen der Physik",
    volume =       "322",
    number =       "10",
    pages =        "891--921",
    year =         "1905",
    DOI =          "http://dx.doi.org/10.1002/andp.19053221004",
    keywords =     "physics",
}
@book{dirac,
    title={The Principles of Quantum Mechanics},
    author={Paul Adrien Maurice Dirac},
    isbn={9780198520115},
    series={International series of monographs on physics},
    year={1981},
    publisher={Clarendon Press},
    keywords = {physics},
}
\end{filecontents*}


\documentclass{article}

\usepackage[%
  backend=biber,
  style=authoryear,
  maxbibnames=9,
  maxcitenames=2,
  uniquelist=false,
  autocite=inline
]{biblatex}
\addbibresource{\jobname.bib}

\DeclareFieldFormat{date}{\mkbibbold{#1}} % <=========================== date 
\DeclareFieldFormat[article,periodical]{volume}{\mkbibbold{#1}} % <===== volume
\DeclareNameAlias{sortname}{first-last-bold}
\DeclareNameFormat{first-last-bold}{\mkbibbold{% <====================== name
  \ifgiveninits
    {\usebibmacro{name:given-family}{\namepartfamily}{\namepartgiveni}{\namepartprefix}{\namepartsuffix}}
    {\usebibmacro{name:given-family}{\namepartfamily}{\namepartgiven}{\namepartprefix}{\namepartsuffix}}%
  \usebibmacro{name:andothers}}}


\begin{document}

Some \autocite{einstein} text \cite{einstein}.
\parencite[I.6.2]{dirac}.

\nocite{*}
\printbibliography[title={References}]

\end{document}

you get the result: