For a comprehensive list of APA citation rules, refer to the Publication Manual of the American Psychological Association, as well as the APA Style Blog (an official companion to the Publication Manual). Here are a few common rules related to article citations:
Where a DOI (Digital Object Identifier) is provided, use it in the citation in the format: https://doi.org/10.1108/13527600810870589
Where no DOI is provided and the article is retrieved online, give the URL of the article publication or the journal home page. This can be easily found using Google Scholar.
Where the article is from private or non-commercial sources or hard to locate, give the complete and specific URL.
If no publication URL is available, and you retrieved the item from one of the Libraries' databases, no URL is needed. You will treat this as a print journal.
Volume / Issues for journals:
Always include volume number and issue number for all journals, magazines, newspapers, and other periodicals.
If the information is not available, omit it from the reference.
Pagination (p. and pp.)
The prefix pp. only goes before page numbers reported for book chapter and encyclopaedia article references. The prefixes, p. and pp., are no longer used for periodical references.