Contributors' names. (Last edited date). Title of resource. Site Name. http://web-address-for-owl-resource

The generic APA citation for OWL pages, which includes author/edit date information, is this:

Title Casing

Titles are capitalized independent of, and may not match, the article's title casing.

Title Casing

Books, Articles, Reports, Webpages...

Capitalize only the first letter of the first word of the title and subtitle, the first word after a colon or a dash in the title, and proper nouns.

Capitalize the first word of the titles and subtitles of journal articles, as well as the first word after a colon or a dash in the title, and any proper nouns.

Academic Journals These are not journal articles!

Capitalize all major words in the titles of journals. Note that this differs from the rule for titling other common sources (like books, reports, webpages, etc.) described above.

In-Text Citations

A Work by One Author

The APA manual recommends the use of the author-date citation structure for in-text citation references. This structure requires that any in-text citation (i.e., within the body of the text) be accompanied by a corresponding reference list entry. In the in-text citation provide the surname of the author but do not include suffixes such as "Jr.".

As Ahmed (2016) mentions... (Ahmed, 2016)

Citing Non-Standard Author Categories

A Work by Two Authors

Name both authors in the signal phrase or in parentheses each time you cite the work. Use the word "and" between the authors' names within the text and use the ampersand in parentheses.

Research by Wegener and Petty (1994) supports... (Wegener & Petty, 1994)

A Work by Three or More Authors

List only the first author’s name followed by “et al.” in every citation, even the first, unless doing so would create ambiguity between different sources.

(Kernis et al., 1993) Kernis et al. (1993) suggest... In et al., et should not be followed by a period. Only "al" should be followed by a period.

If you’re citing multiple works with similar groups of authors, and the shortened “et al” citation form of each source would be the same, you’ll need to avoid ambiguity by writing out more names. If you cited works with these authors:

Jones, Smith, Liu, Huang, and Kim (n.d.) Jones, Smith, Ruiz, Wang, and Stanton (2020) They would be cited in-text as follows to avoid ambiguity:

(Jones, Smith, Liu, et al., n.d.) (Jones, Smith, Ruiz, et al., 2020) Since et al. is plural, it should always be a substitute for more than one name. In the case that et al. would stand in for just one author, write the author’s name instead.