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edition, second printing of the APA manual, offers examples for the general format of APA research papers, in-text citations, endnotes/footnotes, and the reference page.
Include all information the online host makes available, including an issue number in parentheses.
, you should use the DOI format which the article appears with.
So, if it is using the older numeric string, use that as the DOI.
If, however, it is presented as the newer alpha-numeric string, use that as the DOI.
When possible, include the year, month, and date in references.
If the month and date are not available, use the year of publication.
Please note, too, that the OWL still includes information about print sources and databases for those still working with these sources.
Online articles follow the same guidelines for printed articles.
The Purdue OWL maintains examples of citations using both DOI styles.