In addition to APA style central there are a number of other resources available to help you with the sometimes tricky process of citations:
Langsdale Brief Guide to APA 6th ed:
For more information please see:
Publication manual of the American Psychological Association (2010). Washington, DC: American Psychological Association. (BF 76.7 .P83)
The American Psychological Association (APA) has recently updated its Publication Manual. The 6th edition is available in Ready Reference, located next to the Reference Desk on the first floor. The 5th edition is shelved in our reference collection on the first floor.
The guides below give some additional pointers:
APA Style: DOI and URL Flowchart
Visual explanation of when and how to use document Object Identifiers (DOI) and URLs as proscribed by APA style