Cita APA (7a ed.)

University of Lethbridge. Department of Psychology, Vokey, J. R., & Allen, S. W. (2009). Psychological sketches (9th ed.). PsYence Ink.

Cita Chicago Style (17a ed.)

University of Lethbridge. Department of Psychology, John R. Vokey, y Scott W. Allen. Psychological Sketches. 9th ed. Lethbridge, Alberta: PsYence Ink, 2009.

Cita MLA (9a ed.)

University of Lethbridge. Department of Psychology, et al. Psychological Sketches. 9th ed. PsYence Ink, 2009.