Gaya APA

Turner, J, S., Helmes, D, B. (1995). Lifespan Development 5'th Ed. (5). Florida: Holt, Rinehart and Winston.

Gaya MLA

Turner, Jeffrey, S.., Helmes, Donald, B.. "Lifespan Development 5'th Ed.". 5 Florida: Holt, Rinehart and Winston, 1995. Text.