I am using following test program in texmaker
For e.g.
\documentclass[english]{article}
\usepackage[T1]{fontenc}
\usepackage[latin9]{inputenc}
\usepackage{graphicx}
\usepackage{babel}
\usepackage{natbib}
\begin{document}
hello\citet*{greenwade93}
\bibliographystyle{plainat}
\bibliography{bibliography}
\end{document}
And the entry in bibliography is
@article{greenwade93,
author = "George D. Greenwade",
title = "The {C}omprehensive {T}ex {A}rchive {N}etwork ({CTAN})",
year = "1993",
journal = "TUGBoat",
volume = "14",
number = "3",
pages = "342--351",
year = "2004"
}
when i build bibtex and pdflatex then the output is just "hello?" (no errors/warning in texmaker). Then i ran "pdflatex test" it shows
Package natbib Warning: Citation `greenwade93' on page 1 undefined on input lin
e 8.
And then "bibtex test" shows
I couldn't open style file plainat.bst
I checked in miktex package manager natbib package is installed, all 3 ntabib bst files are in C:\Program Files (x86)\MiKTeX 2.8\bibtex\bst\natbib folder.
Answer
The .bst file you want is called plainnat. Yours is missing an n. Try:
\bibliographystyle{plainnat}