How should I code two authors in a bibtex file as "Author1 WITH Author2"?

Question

So I have a book written by Author1 "with the collaboration of Author2". Of course standard method would be just to cite:

@book{Death:2004vg, title = {{Death and Time}}, author = {Author1}, publisher = {None}, year = {2039} }

However, the situation is not so clear since Author2 is keen to have her name included. As she is a reviewer for this article, I better comply. That being said, it is not accurate to express that as an AND relationship. Is there any nice solution?

Answer 1

I would use the editor field for the second author and specify the editortype appropriately. You can either use one of the standard roles provided by biblatex or define your own. Here, I use biblatex's collaborator:

\documentclass{article}
\usepackage[backend=biber]{biblatex}
\usepackage{filecontents}
\begin{filecontents}{\jobname.bib}
  @book{mybook,
    author  =   {Author, The Main},
    title   =   {This Is Not the Title of This Book},
    publisher   =   {Ragged Papyrus},
    address     =   {Nowhere},
    editor  =   {Collaborator, The},
    editortype  =   {collaborator}
  }
\end{filecontents}
\bibliography{\jobname}
\begin{document}
  \autocite{mybook}
  \printbibliography
\end{document}

EDIT

If you need the collaborator listed in the labels for an author-year style, one way would be to redefine the labels. However, since this is probably not something you need repeatedly, I would just use the shortauthor field:

\documentclass{article}
\usepackage[backend=biber, style=authoryear]{biblatex}
\usepackage{filecontents}
\begin{filecontents}{\jobname.bib}
  @book{mybook,
    author  =   {Author, The Main},
    shortauthor =   {{Author with Collaborator}},
    title   =   {This Is Not the Title of This Book},
    publisher   =   {Ragged Papyrus},
    address     =   {Nowhere},
    editor  =   {Collaborator, The},
    editortype  =   {collaborator},
    year    =   1066,
  }
\end{filecontents}
\bibliography{\jobname}
\begin{document}
  \autocite{mybook}
  \printbibliography
\end{document}