APA (7e ed.) Bronvermelding
Turner, J. S., & Helms, D. B. (1983). Lifespan development (2nd. ed.). Holt, Rinehart and Winston.
Chicago (17e ed.) Bronvermelding
Turner, Jeffrey S., en Donald B. Helms. Lifespan Development. 2nd. ed. New York: Holt, Rinehart and Winston, 1983.
MLA (9e ed.) Bronvermelding
Turner, Jeffrey S., en Donald B. Helms. Lifespan Development. 2nd. ed. Holt, Rinehart and Winston, 1983.
Let op: Deze citaties zijn niet altijd 100% accuraat.