I would like to have back references in my Tufte style document.
I first created a minimal working example that creates back references using the article document class, based on this answer which worked as expected.
I then attempted to make minimal adjustments to make it work with the Tufte document class as well. This did not work. I observed that when running pdflatex, I got a warning:
Package hyperref Warning: Option `backref' has already been used,
(hyperref) setting the option has no effect on input line 3.
I am assuming that hyperref is loaded by the Tufte style and sets the backref option, which then prevents me from changing it.
What can I do to make back references work with the Tufte document class?
Here is my example of successfully creating back references with the article class:
\documentclass{article}
\usepackage[backref=page]{hyperref}
\usepackage{etoolbox}
\makeatletter
\patchcmd{\BR@backref}{\newblock}{\newblock[page~}{}{}
\patchcmd{\BR@backref}{\par}{]\par}{}{}
\makeatother
\title{My Title}
\author{My Name}
\begin{document}
\maketitle
I cite a book~\cite{key}.
I cite that book again~\cite{key}.
\bibliographystyle{plainnat}
\bibliography{biblio.bib}
\end{document}
It produces this output which does contain the back reference [page 1]:
Here is my attempt to convert it into something compatible with Tufte:
\documentclass[symmetric,justified]{tufte-book}
\hypersetup{backref=page}
\usepackage{etoolbox}
\makeatletter
\patchcmd{\BR@backref}{\newblock}{\newblock[page~}{}{}
\patchcmd{\BR@backref}{\par}{]\par}{}{}
\makeatother
\title{My Title}
\author{My Name}
\begin{document}
\maketitle
I cite a book~\cite{key}.
I cite that book again~\cite{key}.
\bibliographystyle{plainnat}
\bibliography{biblio.bib}
\end{document}
This produces a document with three pages, correctly using the Tufte margin citations, but the backward page reference is missing, which makes sense, since the warning said I could not reset the backref option.
Here is my bibliography file in case it is relevant:
@book{key,
author={Some Author},
title={Title},
publisher={Publisher},
year={2001}
}
I am using pdflatex and bibtex from the command line to build my documents.
