BibTeX, biblatex and biber ⇒ question about citation in the text

[ietr]

Hello,

I want to use a citation form like
(author, year)
(Robin, 2005), for example.
I tried to use natbib, but it did not work.

Code: Select all

\usepackage[authoryear]{natbib}

\citep{Robin2005}

However, in the text, what appeared is

(25) round parenthesis and the number.

[elingeniero]

Let us see a copy of your bibliography entries, according to natbib documentation:

The natbib package will automatically switch to numerical mode if any
one of the \bibitem entries fails to conform to the possible author–year
formats. There is no way to override this, since such an entry would cause
trouble in the author–year mode.

[josephwright]

We really need to see a bit more of what you are doing: a 'minimal working example' would be best (a short document showing what you are doing).