The Chicago Manual of Style Online
This is an official guide to Chicago citation. The guide covers “notes and bibliography style” and “author-date style”, the two varieties of Chicago citation style.
Center for Writing Studies, University of Illinois at Urbana-Champaign
This Handbook summarizes and illustrates the bibliographical formatting rules for two different citation styles: APA style and MLA style.
The MLA Style Center
This is an official guide to MLA citation style. It gives step-by-step demonstration to show how to develop each entry of your referencing from the beginning.
