Cite working paper

Question

I am exporting the .bib file from Mendeley and use it in my bibliography. However, working papers only appear with author names and paper title. They miss the working paper series and paper number. The paper number does not even get transferred to the .bib file, although is is entered in Mendeley at the right spot, see attached image.

@unpublished{Brandts2017,
address = {Center for Economic Studies {\&} Ifo Institute},
author = {Brandts, Jordi and Riedl, Arno},
file = {:Users/Desktop/Mendeley Papers/SSRN-id2731096.pdf:pdf},
institution = {CESIfo},
keywords = {CESifo Working Paper no. 5694,competition,cooperation,experiments},
series = {CESIfo Working Paper},
title = {{Market Interaction and Efficient Cooperation}},
year = {2017}
}

Using \bibliographystyle{chicago} or \bibliographystyle{apa} followed by \bibliography{library} then gives

Brandts, J. and A. Riedl (2017). Market Interaction and Efficient Cooperation.

But what I need is:

Brandts, J. and A. Riedl (2017). Market Interaction and Efficient Cooperation. CESIfo Working Paper No. 5694.

* UPDATE *

I updated the entry in Mendeley, see image.

In the .bib this gives:

@techreport{Brandts2017,
address = {Munich},
author = {Brandts, Jordi and Riedl, Arno},
file = {:Users/Desktop/Mendeley Papers/SSRN-id2731096.pdf:pdf},
institution = {Center for Economic Studies {\&} Ifo Institute},
keywords = {CESifo Working Paper no. 5694,competition,cooperation,experiments},
series = {CESIfo Working Paper},
title = {{Market Interaction and Efficient Cooperation}},
year = {2017}
}

In the pdf this still gives:

Brandts, J. and Riedl, A. (2017). Market Interaction and Efficient Coop- eration. Technical report, Center for Economic Studies & Ifo Institute, Munich.

What I still need is the "technical report" to dissapear, and the paper number needs to be shown.

Answer 1

You should be using the @techreport entry type for the paper at hand. In the solution below, note that I added the type field. If this field not provided, it defaults to "Technical Report", whereas here it should quite obviously be "Working Paper". You also need to furnish a number field, for the number of the working paper.

The field that's currently labelled "address" is wrong -- that's the institution. For the address field, you should definitely use "Munich", not "Center for Economic Studies \& Ifo Institute". (Just because some pieces of information are provided by Mendeley doesn't mean that you're absolved from checking each and every entry carefully for errors and omissions...)

\RequirePackage{filecontents}
\begin{filecontents}{mybib.bib}
@techreport{brandts-riedl:2017,
address = {Munich},
author  = {Brandts, Jordi and Riedl, Arno},
institution = {Center for Economic Studies \& Ifo Institute},
keywords= {CESifo Working Paper no. 5694, competition,cooperation,experiments},
series  = {CESIfo Working Paper},
type    = {Working Paper},
number  = {5694},
title   = {Market Interaction and Efficient Cooperation},
year    = {2017},
xmonth  = jul,
xnote   = {(Initial version: Jan. 2016)},
}
\end{filecontents}

\documentclass{article}
\usepackage[english]{babel}
\usepackage[authoryear,round]{natbib}
\bibliographystyle{chicago}

\begin{document}
\nocite{*}
\bibliography{mybib}
\end{document}