Gaya APA

Papalia, D., Old, S, W. (2008). Human Development I - IV (Ed 9cet 1). Jakarta_: Prenada Media Group _2.

Gaya MLA

Papalia, Diane., Old, Sally, Wendkos. "Human Development I - IV". Ed 9cet 1 Jakarta_: Prenada Media Group _2, 2008. Buku Teks.