APA (7th ed.) Zitazioa

Turner, J. S., & Helms, D. B. (1983). Lifespan development (2nd. ed.). Holt, Rinehart and Winston.

Chicago Style (17th ed.) Zitazioa

Turner, Jeffrey S., eta Donald B. Helms. Lifespan Development. 2nd. ed. New York: Holt, Rinehart and Winston, 1983.

MLA (9th ed.) Zitazioa

Turner, Jeffrey S., eta Donald B. Helms. Lifespan Development. 2nd. ed. Holt, Rinehart and Winston, 1983.