"When a stable or archived version of the work is cited ..., a retrieval date is not needed" (APA, 2020, p. 324).
EXAMPLE - Individual author(s), with DOI
Eberhardt, E., & Afshin, A. (2018). Hydraulic fracturing. In P. Bobrowsky & B. Marker (Eds.), Encyclopedia of engineering geology (pp. 1-6). Springer. https://doi.org/10.1007/978-3-319-12127-7_159-1
Parenthetical in-text citation: (Eberhardt & Afshin, 2018)
Narrative in-text citation: Eberhardt and Afshin (2018)
(APA, 2020, p. 328)
The URL in your citation must point readers to the version of the Wikipedia article that you consulted. To find the link to the appropriate archived version of the article, go to the article and select "View History."
2019–20 Coronavirus outbreak. (2020, February 20). In Wikipedia. https://en.wikipedia.org/w/index.php?title=2019_E2_80_9320_coronavirus_outbreak&oldid=941821286
Parenthetical in-text citation: ("2019-20 Coronavirus outbreak," 2020)
Narrative in-text citation: "2019-20 Coronavirus outbreak" (2020)
(APA, 2020, p. 329)
EXAMPLE - Entire print dictionary with author
Colman, A. W. (2015). A dictionary of psychology. Oxford University Press.
Parenthetical in-text citation: (Colman, 2015)
Narrative in-text citation: Colman (2015)
(APA, 2020, p. 324)
EXAMPLE - Dictionary online entry that is routinely updated
Merriam-Webster. (n.d.) Library. In Merriam-Webster.com dictionary. Retrieved April 16, 2020, from https://www.merriam-webster.com/dictionary/library
Parenthetical in-text citation: (Merriam-Webster, n.d.)
Narrative in-text citation: Merriam-Webster (n.d.)
(APA, 2020, p. 328)
"When the author and publisher are the same, omit the publisher from the source" (APA, 2020, p. 324).
You may see examples where authors include the title of the diagnostic manual and its corresponding edition number, but this is not required. For further examples of how to cite using the title and edition number in-text, consult the APA's Publication Manual (2020, p. 324).
American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed.). https://doi.org/10.1176/appi.books.9780890425596
Parenthetical in-text citation: (American Psychiatric Association, 2013)
Narrative in-text citation: American Psychiatric Association (2013)
(APA, 2020, p. 324; APA, n.d., https://apastyle.apa.org/style-grammar-guidelines/references/examples/diagnostic-manual-references)