# Natbib Chronological Parenthetical Citations

I'm using the natbib package along with the chicago bibliography style, however when creating a parenthetical citation in-text, the citations are ordered alphabetically instead of chronologically. Is there any package options that I would be able to use in order to achieve a parenthetical citation that is ordered chronologically?

Here is my preamble for reference:

\documentclass[11pt,a4paper]{article}
\usepackage[left=2.5cm, right=2.5cm, top=2.5cm, bottom=2.5cm]{geometry}
\usepackage[english]{babel}
\usepackage[utf8]{inputenc}
\usepackage[stable]{footmisc}
\usepackage{amsmath}
\usepackage{graphicx}
\usepackage{xcolor}
\usepackage{microtype}
\usepackage[authoryear, round, sort&compress]{natbib}
\usepackage[colorinlistoftodos]{todonotes}
\usepackage{setspace}


Here is a MWE:

\documentclass{article}
\usepackage[english]{babel}
\usepackage[utf8]{inputenc}
\usepackage[stable]{footmisc}
\usepackage[authoryear, round, sort&compress]{natbib}

\begin{document}
\citep{cite1,cite2}
\bibliographystyle{chicago}
\bibliography{firstpaper}
\end{document}

• Hello! Please help us to help you and add a minimal working example (MWE) that illustrates your problem. It will be much easier for us to reproduce your situation and find out what the issue is when we see compilable code, starting with \documentclass{...} and ending with \end{document}. – yo' Aug 15 '14 at 16:28
• @Mico Thanks for the suggestion but it doesn't seem to even compile a bibliography using this method. – David Patrick Aug 15 '14 at 16:45
• Could you please give an example of entries with keys cite1 and cite2? Are we talking about two papers written by the same author(s) and published in the same year, where you happen to know that the entry cite1 was published before entry cite2? If that's not the issue, then please tell us what is. – Mico Aug 15 '14 at 16:50
• @Mico Apologies for the lack of detail. The citations are by different authors in different years and I want to order them from oldest to most recent. – David Patrick Aug 15 '14 at 16:53
• To make sure I understand: Do you want only the groups of citations, or the citations as well as the bib entries, be sorted by year rather than alphabetically by authors' names? Incidentally, you providing two conflicting and mutually exclusive options to natbib: numbers and authoryear -- which citation style do you want? – Mico Aug 15 '14 at 16:55

To get the entries listed by \citep or \citet printed in the order in which they are input, rather than sorted alphabetically by authors' names, omit the option sort&compress when loading natbib.
If neither the sort nor the sort&compress options are set, the ordering of the citation callouts is determined by the way you sort the keys in the argument of the citation commands \citep and \citet.