Cita APA (7a ed.)

Ekman, P., Ekman, M. A. M., & Ekman, T. (1991). Why kids lie: How parents can encourage truthfulness. Penguin.

Cita Chicago Style (17a ed.)

Ekman, Paul, Mary Ann Mason Ekman, y Tom Ekman. Why Kids Lie: How Parents Can Encourage Truthfulness. New York [etc.]: Penguin, 1991.

Cita MLA (9a ed.)

Ekman, Paul, et al. Why Kids Lie: How Parents Can Encourage Truthfulness. Penguin, 1991.