Citation Guides
American Psychological Association (APA) Style
- Publication Manual of the APA: Information about the publication, table of contents, tutorials
- FAQs About APA Style: General help and specific examples
- APA Citation Style (Long Island University) – examples based on Publication Manual of the APA
- APA Formatting and Style Guide (OWL at Purdue University) – site includes guidelines for all aspects of writing
- Citation Machine (The Landmark Project) – free citation formatting
- Guide to Citation Generators (University at Albany Libraries)
- Interpreting Citations Tutorial (University of Missouri-St. Louis)
The National Library of Medicine Style
- Citing Medicine: The NLM Style Guide for Authors, Editors, and Publishers (2nd Edition 2007)
American Chemical Society
- CAS Source Index (CASSI) Search Tool: Finds journal titles and abbreviations for publications indexed by CAS since 1907 (serial, non-serial, scientific and technical publications)