Cita APA (7a ed.)

Newman, B. M., & Newman, P. R. (2011). Life-span development: A psychosocial approach (11th ed., international ed.). Wadsworth Cengage Learning.

Cita Chicago Style (17a ed.)

Newman, Barbara M., y Phillip R. Newman. Life-span Development: A Psychosocial Approach. 11th ed., international ed. Belmont, CA: Wadsworth Cengage Learning, 2011.

Cita MLA (9a ed.)

Newman, Barbara M., y Phillip R. Newman. Life-span Development: A Psychosocial Approach. 11th ed., international ed. Wadsworth Cengage Learning, 2011.