BibTex: How to cite the author of preamble of another author?

Question

I don't know how to make the BibTex entry of the following case: The entire book is from one author A, but the editor (author B) wrote only the preamble and I need to cite this preamble, and I don't know how to do it.

It is not this case How to cite a book chapter written by an author who is not the editor or author of the book with BibTeX? because I think I'll need 2 different fields to different authors.

Answer 1

A minor variation on this answer to the posting How to cite a book chapter written by an author that is not the editor or author of the book with BibTeX? should work for you. Note that the author and editor fields contain the same information.

If you believe it's either necessary or advisable to mention the name of the author of the rest of the book, you can do so by adding a note field -- see the example below -- or by adding the author's name, in parentheses, to the booktitle field. The choice will likely depend in part on publishing conventions (about which you haven't told us much so far).

\RequirePackage{filecontents}
\begin{filecontents}{mybib.bib}
@incollection{xyz,
   author    = "EditorFirstName EditorSurname",
   editor    = "EditorFirstName EditorSurname",
   title     = "Preface",
   booktitle = "Booktitle",
   publisher = "Publisher",
   address   = "SomeTown",
   pages     = "xv--xxiii",
   note      = "(Author: A. AuthorSurname)",
}
\end{filecontents}

\documentclass{article}
\usepackage{natbib}
\bibliographystyle{abbrvnat} % select a bibliography style

\begin{document}
\nocite{*}
\bibliography{mybib}
\end{document}