##  Class files

Biblatex provides several standard citations styles, if no citation style is set LaTeX uses the one that matches the bibliography style. Below you can see an example: \documentclass{article} \usepackage[utf8]{inputenc} \usepackage[english]{babel}   \usepackage[ backend=biber, style=alphabetic, citestyle=authoryear ]{biblatex}   \addbibresource{sample.bib} %Imports bibliography file   \begin{document} \section{First section}   This document is an example, two items are cited: \textit{The \LaTeX\ Companion} book is \cite{latexcompanion}, and Einstein's journal paper is \cite{einstein}.   \medskip   \printbibliography \end{document} The parameter citestyle=authoryear passed to the command that imports biblatex is the one that sets the citation style, in this case authoryear. The standard citation styles are: numeric Implements a numeric citation scheme intended for in-text citations. Should be employed in conjunction with the numeric bibliography style. numeric-comp Compact variant of the numeric mode. Citations like [1, 2, 3] are replaced by [1-3]. numeric-verb Verbose variant of the numeric style. Instead of [2, 5, 7] will print [2];[5];[7]. alphabetic Alphabetic citation scheme similar to the standard alpha in style bibtex. To be used in conjunction with the alphabetic bibliography style. alphabetic-verb Verbose version of the alphabetic style. Instead of [Doe98, Doe95, Farn2004] will print [Doe98];[Doe95];[Farn2004]. authoryear Implements the author-year citation scheme. To be used in conjunction with the author-year bibliography style. authoryear-comp Compact variant of the authoryear style. Prints the author only once if subsequent references passed to a single citation command share the same author. Prints Doe 1992, 1995 instead of Doe 1992, Doe 1995. authoryear-ibid A variant of the authoryear intended for footnote citations. Replaces repeated citations by the abbreviation ibidem. authoryear-icomp A style combining the features of authoryear-comp and authoryear-ibid authortitle Implements the author-title scheme. Intended for citations given in footnotes. authortitle-comp Compact variant of authortitle. Instead of Doe, First title; Doe, Second title this will print Doe, First title, Second title. authortitle-ibid A variant of the authortitle intended for footnote citations. Replaces repeated citations by the abbreviation ibidem. authortitle-icomp A style combining authortitle-comp and authortitle-ibid. authortitle-terse Variant of authoritle that only prints the title if the bibliography contains more than one work of the respective author/editor. authortitle-tcomp Style combining authortitle-terse and authortitle-comp. authortitle-ticomp Style combining authortitle-icomp and authortitle-terse. verbose Citation style that prints a full citation when the entry is cited for the first time and a short version afterwards. reading Citation style that goes with the bibliography style by the same name. Loads the authortitle style. There are other non-standard citation styles popular in different journals and thesis In Sciences: American Chemical Society (ACS) style American Institute of Physics (AIP) style American Mathematical Society (AMS) style Vancouver system Institute of Electrical and Electronics Engineers (IEEE) style Nature style Science style In Humanities: Chicago Style Harvard referencing style MLA style In Socials: American Psychological Association (APA) style Citation style biblatex stylename ACS chem-acs AIP phys (*) Nature nature Science science IEEE ieee Chicago chicago-authordate MLA mla APA apa (*) this is a new style, see http://ctan.org/pkg/biblatex-phys   Open an example of the biblatex package in ShareLaTeX  Further reading For more information see Bibliography management in LaTeX Biblatex bibliography styles Biblatex package documentation Table of contents Management in a large project