Gaya APA

Olds, S, W., Papalia, D, E. (1986). Human development (ed. 3 cet. 1). United States of America: McGraw-Hill Book Company.

Gaya MLA

Olds, Sally, Wendkos., Papalia, Diane, E. "Human development". ed. 3 cet. 1 United States of America: McGraw-Hill Book Company, 1986. Text.