Use the author’s last name and the year of publication in parentheses
Example: (Smith, 2020)
If quoting directly, include the page number
Example: (Smith, 2020, p. 45)
If the book has two authors, include both last names joined by an ampersand
Example: (Smith & Jones, 2020)
If the book has three or more authors, use the first author’s last name followed by et al.
Example: (Smith et al., 2020)
If the author’s name is mentioned in the sentence, put only the year and page number in parentheses
Example: Smith (2020) stated that…
For multiple works by the same author in the same year, add letters after the year
Example: (Smith, 2020a), (Smith, 2020b)