General

• Citing Sources
  Documentation Guidelines for citing sources and avoiding plagiarism. From Duke University Libraries

• The OWL at Purdue
  From the Purdue OnLine Writing Lab (OWL).

• Research and Documentation Online
  Information from Diana Hacker's book. Finding sources and citation styles are covered in detail, with examples.

Digital Object Identifier (DOI)

• Resolve A DOI (http://dx.doi.org/)
• Free DOI look-up (CrossRef)
• Info for libraries: Information on DOIs from CrossRef
  A DOI is an alphanumeric name that identifies digital content, such as a book or journal article. The DOI is paired with the object's electronic address, or URL, in an updateable central directory, and is published in place of the URL in order to avoid broken links while allowing the content to move as needed.

AMA (American Medical Association)

AMA Manual of Style: A Guide for Authors and Editors.10th ed. (Ref R119 .A533 2007)

• AMA Manual of Style (Oxford University Press)
  Contains a FAQ and some excerpts from the manual.

• AMA MedStyle Stat!
  A guide to the main points of AMA style.

• Quick Reference Citation Format (McWhorter School of Pharmacy Samford University)

APA (American Psychological Association)

Publication Manual of the American Psychological Association. 6th ed. (Ref BF76.7 .P83 2010)

• APA Citation Style (UD Library)

• APA Style.org (APA)
  The American Psychological Association's official website for APA Style.

• APA Formatting and Style Guide (OWL)
  From the Purdue Online Writing Lab.

• APA Style Essentials (By Douglas Degelman, Vanguard University)
  More than a guide to citations and Reference lists, this guide describes how to write the various parts of a paper following APA instructions.

Chicago Manual of Style

The Chicago Manual of Style. 15th ed. (Ref Z253 .C57 15th)
and Library Databases [restricted to UD]

• Chicago-Style Citation Quick Guide (Chicago Manual of Style)
  Website features a summary of the Manual (See Tools) and a Q&A section.

• History: Chicago Style
  A portion of Diane Hacker's Research and Documentation in the Electronic Age.

MLA (Modern Language Association)

MLA Handbook for Writers of Research Papers. 7th ed., 2009. (Ref LB2369 .G53 2009)

• MLA Citation Style (UD Library)

• MLA 2009 Formatting and Style Guide (Purdue Online Writing Lab)

• Documenting Sources
  Guidelines based on the MLA Style Manual and Guide to Scholarly Publishing, 3rd ed., 2008. Published as a Hacker Handbooks Supplement.

• MLA Style
  MLA official style Web page for MLA style.

Turabian

A Manual for Writers of Research Papers, Theses, and Dissertations: Chicago Style for Students and Researchers. 7th ed. (Ref LB2369 .T8 2007)

• Turabian Citation Style (UD Library)
  Guide to the Notes and Bibliography Style (Humanities style).

• Turabian Quick Guide (University of Chicago Press)

• Citing Sources Using the Chicago/Turabian Style: Notes System (University of Maryland Libraries)

Government Documents

• Style Manuals / Bibliographic Citations for Government Publications

Legal

• Introduction to Basic Legal Citation (LII). 2007.

Medicine and Sciences

• American Medical Association (AMA)

• Citing Medicine: The NLM Style Guide For Authors, Editors, And Publishers. 2nd ed., 2007.

• Institute of Electrical and Electronics Engineers (IEEE) Standards Style Manual
  IEEE style manuals are used for writing standards and providing information on citing resources not covered by other style guides, such as how to cite mathematical expressions.

• Journal of the American Dietetic Association

• Science: Information for Authors

RefWorks

• RefWorks is a Web-based reference manager. After you create an individual account, RefWorks helps you store and manage bibliographic information and generate notes and reference lists in various bibliographic citation formats. RefWorks is listed on the Library Databases pages. [restricted to UD]

• RefWorks Guide (UD Library)

• RefWorks @ the University of Delaware Library -- a Quick Guide (UD Library)

Social Sciences

• American Anthropological Association Style Guide

• ASA Style Guide. 3rd ed. (Ref HM73 .A54x 2007)