It’s ironic that an organization that is such a stickler for precision published its new 6th edition of the APA Publication Manual with a number of errors, but it did.  These errors have been corrected in the second printing, but if you purchased a first printing like I did, go to this URL to see the corrections.

Articles retrieved from databases are no longer configured the same way:  “When referencing material obtained from an online database (such as a database in the library), provide appropriate print citation information (formatted just like a “normal” print citation would be for that type of work). This will allow people to retrieve the print version if they do not have access to the database from which you retrieved the article. You can also include the item number or accession number in parentheses at the end, but the APA manual says that this is not required. For articles that are easily located, do not provide database information. If the article is difficult to locate, then you can provide database information. Only use retrieval dates if the source could change, such as Wikis. For more about citing articles retrieved from electronic databases, see pages 187-192 of the Publication Manual.” (