If you are citing a source that has multiple authors, follow these basic steps.
Always cite both authors' names in-text everytime you reference them. Example: Johnson and Smith (2009) found...
Provide all the authors' last names when you first refer to a document with 3-5 authors. Only list the first author with the Latin abbreviation "et al." for any subsequent references.
Jones, Chavez, Jackson, and Chen (2010) duplicated...
Jones et al. (2010) further described...
6 or More Authors:
If a document has six or more authors, simply provide the last name of the first author with "et al." from the first citation to the last.
Thomas et al. (2007) likened abnormal psychology to...
... distractions (Thomas et al., 2007).
Important Note: If you have two or more documents that look the same when shortened, please follow the guidelines set out in the Authors and Dates Matching section.
APA Manual p.175, Section 6.12
Sometimes an author of a book, article or website will mention another person’s work by using a quotation or paraphrased idea from that source. (This may be called a secondary source.) For example, the Kirkey article you are reading includes a quotation by Smith that you would like to include in your essay.
The basic rule is that in both your References list and in-text citation you will still cite Kirkey. Kirkey will appear in your References list – not Smith. You will add the words “as cited in” to your in-text citation.
Examples of in-text citations:
According to a study by Smith (as cited in Kirkey, 2013) 42% of doctors would refuse to perform legal euthanasia. Smith (as cited in Kirkey, 2013) states that “even if euthanasia was legal, 42% of doctors would be against this method of assisted dying” (p. 34).
Example of Reference list citation:
Kirkey, S. (2013, Feb 9). Euthanasia. The Montreal Gazette, p A10. Retrieved from Canadian Major Dailies.