I am writing a thesis and I am organizing the contents in the way described on this page.
In my project folder, the main document is thesis.tex. It looks like this:
% Write the thesis in report format (thesis.tex)
\documentclass[12pt,letterpaper]{report}
% Insert packages
\usepackage{style}
% Insert preamble
\input{./tex/preamble}
% Begin the thesis
\begin{document}
% Insert title
\input{./tex/title}
% Insert table of contents, figures, and tables
\tableofcontents
\listoffigures
\listoftables
% Insert the introduction
\input{./tex/introduction}
% Insert the conclusion
\input{./tex/conclusion}
% Insert the bibliography
\input{./tex/bibliography}
\end{document}
As you can see, all the chapters are located in the tex subdirectory. In particular, the tex subdirectory contains a bib file tex/references.bib and a file tex/bibliography.tex that looks like this:
% Bibliography (tex/bibliography.tex)
% Make the bibliography
\bibliographystyle{plain}
\bibliography{./references}
Now when I compile thesis.tex, the bibliography doesn't appear and I get
Warning: Citation 'aslam2013' undefined on page 4 on input line 4
However, if I instead put the following directly in thesis.tex:
\bibliographystyle{plain}
\bibliography{./tex/references}
then I get no warning and the bibliography appears.
It's not such a big deal, but I would have liked my bibliography to be organized in a tex file just like the others. Why can't I include the bibliography the way I do? It must be quite obvious for some of you but I really can't see what's wrong...
I'm using Texnic Center on Windows 10.