APA-viite (7. p.)

Desmet, P. M., & Fokkinga, S. F. (2020). Thirteen Fundamental Psychological Needs.

Chicago-viite (17. p.)

Desmet, Pieter M.A, ja Steven F. Fokkinga. Thirteen Fundamental Psychological Needs. Delft, 2020.

MLA-viite (9. p.)

Desmet, Pieter M.A, ja Steven F. Fokkinga. Thirteen Fundamental Psychological Needs. 2020.