APA-referens (7:e uppl.)

Tyler, L. E. (1974). Individual differences: Abilities and motivational directions. Prentice-Hall.

Chicago-referens (17:e uppl.)

Tyler, Leona Elizabeth. Individual Differences: Abilities and Motivational Directions. Englewood Cliffs, N. J: Prentice-Hall, 1974.

MLA-referens (9:e uppl.)

Tyler, Leona Elizabeth. Individual Differences: Abilities and Motivational Directions. Prentice-Hall, 1974.