Document Classes ⇒ Different header for odd and even pages

[Johannes_B]

It is important to make the code as minimal as possible. You can only achieve that by trial and error (or experience). In your case, babel is interfering and you need to use babels mechanism.

Code: Select all

\documentclass[12pt, twoside, a4paper]{book}
\usepackage[portuguese,english]{babel}

\addto\captionsenglish{%
\renewcommand{\bibname}{References}}
\addto\captionsportuguese{%
\renewcommand{\bibname}{something portuguese}}
\begin{document}
\begin{thebibliography}{}
\bibitem{Miller} Miller WG. The neuropsychology of head injuries. The neuropsychology handbook; behavioural and clinical perspectives. New York: Springer 1986; 347-375
\end{thebibliography}{}
\selectlanguage{portuguese}
\begin{thebibliography}{}
\bibitem{MillerB} Miller WG. The neuropsychology of head injuries. The neuropsychology handbook; behavioural and clinical perspectives. New York: Springer 1986; 347-375
\end{thebibliography}{}
\end{document}

[paulosousa]

For now it worked, thanks a lot bu the document continues to have (only the word) References in a page, next page is empty and the references are in the next one ...

[Johannes_B]

This does not happen in the example i gave you! You are doing something different and it is your responsibility to find this difference. I cannot see your (complete) code. Remember, there is no reason to write \chapter*{References}!

[paulosousa]

Removed

Code: Select all

\chapter*{References}

thanks a lot!