Style manuals cover the most common print and non-print sources, but often are spotty on electronic sources. The major manuals--APA, MLA, and Chicago--have been revised to include the most popular electronic sources, but even the latest editions often fail to address problems presented by evolving technology. Many print publications provide web sites for changes and updates.

AMA Style Guide
Based on American Medical Association Manual of Style, 9th ed., 1998.

APA Citation Guide
Based on the Publication Manual of the American Psychological Association, 5th edition, this guide provides examples for citing books; book chapters; encyclopedia, journal, magazine, and newspaper articles; Government Printing Office and ERIC reports; online databases; and Internet resources. 

CBE (Science) Citation Guide
Based on the Scientific Style and Format: The CBE Manual for Authors, Editors, and Publishers, 6th edition, this guide provides examples for citing books; book chapters; journal articles; conference papers and abstracts; technical reports; and dissertations theses.

Chicago Manual of Style Citation Guide
Based on The Chicago Manual of Style, 15th edition, this guide provides examples in Author-Date style (used in the sciences) as well as the Notes-Bibliography style (used in the arts, literature, and history) for citing books; encyclopaedia, journal, magazine, and newspaper articles; e-books and journals; and Internet resources.

Citation Style Guides for Internet and Electronic Sources
Internet and electronic information, with no print equivalents, present new challenges to scholars. Increasingly information is being published only in electronic formats, and questions about how to cite these sources in academic papers have become frequent at library reference desks. This guide is adapted from one prepared by the University of Alberta.

Modern Language Association (MLA) Citation Guide
Based on the MLA Handbooks for Writers of Research Papers, 4th edition, this guide provides examples for citing books; anthologies and works in anthologies; encyclopedia, journal, magazine, and newspaper articles; reviews; works of art; television programs; sound recordings; online databases; and Internet resources. 

Turabian Citation Guide
Based on the A Manual for Writers of Term Papers, Theses, and Dissertations, 6th edition, this guide provides examples in "Humanities" as well as "Scientific" styles for citing books; encyclopaedia, journal, magazine, and newspaper articles; and online databases.