Gaya APA

Newman, B, M., Newman, P, R. (2009). Development Through Life : A Psychosocial Approach 10'th Ed. (10). USA: Wadsworth Cengage Learning.

Gaya MLA

Newman, Barbara, M.., Newman, Philip, R.. "Development Through Life : A Psychosocial Approach 10'th Ed.". 10 USA: Wadsworth Cengage Learning, 2009. Text.