Chicago style solution 

> What is wrong with
>
> \usepackage{chicago}
> \bibliographystyle{chicago}

Not working, as I post in another thread.

>
> or
>
> \usepackage{natbib}
> \citestyle{chicago}
> \bibliographystyle{chicago}

<sigh> it might seem too trivial to you. But what I got is:

$ bibtex t-test
This is BibTeX, Version 0.99c (Web2C 7.3.1)
The top-level auxiliary file: t-test.aux
I couldn't open style file chicago.bst
---line 11 of file t-test.aux
 : \bibstyle{chicago
 :                  }
I'm skipping whatever remains of this command
I found no style file---while reading file t-test.aux
(There were 2 error messages)
> or even
>
> \usepackage{natbib}
> \citestyle{chicago}
> \bibliographystyle{someSelfdefinedChicagoLookalike}

Now, you might understand my problem. Asking for a chicago style *solution* as a newbie — nothing else and nothing more. This someSelfdefinedChicagoLookalike is beyond my request. I'd be much happy if the chicago style works for me.

Chicago style solution 

> This makes this package useless for me. Or can you explain me how, with a
> makebst generated bst, I can have citations like these:

> On the other hand, Smith (1999) claims that...

> On the other hand, Smith ( 1999b, p. 12) claims that...

> On the other hand, some scholars (Smith 1999; Jones et al. 2000) claim
> that...

\citep{Smith99,Jones00}

natbib allows you to modify the citation format with \bibpunct.

That's independent from your .bst file.

Robert Schlicht