APA (7e ed.) Bronvermelding

Cotler, S., & Guerra, J. J. (1976). Assertion training. Research Press.

Chicago (17e ed.) Bronvermelding

Cotler, Sherwin, en Julio J. Guerra. Assertion Training. Champaign, Ill: Research Press, 1976.

MLA (9e ed.) Bronvermelding

Cotler, Sherwin, en Julio J. Guerra. Assertion Training. Research Press, 1976.