Gaya APA

Newman, M, B. (2012). Life-span development a psychosocial approach : ED-11th (ED-11th). Canada: Canada : WadsWorth, 2013.

Gaya MLA

Newman, M., Barbara. "Life-span development a psychosocial approach : ED-11th". ED-11th Canada: Canada : WadsWorth, 2013, 2012. Text.