Cita APA (7th ed.)

Newman, B. M., & Newman, P. R. (2012). Life-span development: A psychosocial approach (11th edition, International edition.). Wadsworth Cengage Learning.

Cita Chicago (17th ed.)

Newman, Barbara M., i Philip R. Newman. Life-span Development: A Psychosocial Approach. 11th edition, International edition. Australia: Wadsworth Cengage Learning, 2012.

Cita MLA (9th ed.)

Newman, Barbara M., i Philip R. Newman. Life-span Development: A Psychosocial Approach. 11th edition, International edition. Wadsworth Cengage Learning, 2012.