Citing sources according to APA guidelines

One author

• Parenthetical citation
  The more time students had spent on Facebook, the less happy they felt over time (Wainwright, 2019).

• Narrative citation
  Wainwright (2019) found that the more time students had spent on Facebook, the less happy they felt over time.

Two authors

• Parenthetical citation
  A recent study (Fallon & Lindenau, 2021) compares 161 adults diagnosed with ADHD to . . . .

• Narrative citation
  Fallon and Lindenau (2021) compare 161 adults diagnosed with ADHD to . . . .

Three+ authors

Verwijs alleen naar de eerste auteur, en voeg de afkorting “et al.” (voor “en anderen”) toe.

• Parenthetical citation
  Moderate exercise can have a beneficial effect upon depression (Pollock et al., 2021).
• Narrative citation
  Pollock et al. (2021) found that exercise can have a beneficial effect upon depression.
  In the reference list, “et al.” is not used; up to 20 authors must be provided. For more guidance, see Subsection 3.5.