Zotero: The Tri-College Libraries recommend Zotero, a free online app that can format your bibliography, keep your citations organized, and even save your articles in the cloud so you can access them later from the library, home, or a café.
Zotero: A Citation Tool A tri-college guide to installing and using Zotero to save your references and then cite them in footnotes and the computer-generated bibliography.
This page explains the system using separate bibliographic notes for citations rather than including them in the text as in often done in science papers. Examples are included for the different kinds of publications most often used by history students.
Faculty from the Haverford College Department of Classics provide advice on the general responsibilities and the stylistic considerations involved in providing citations for your sources.