Cita APA (7th ed.)

Kail, R. V., & Cavanaugh, J. C. (2019). Human development: A life-span view (Eight Edition.). Cengage.

Cita Chicago (17th ed.)

Kail, Robert V., i John C. Cavanaugh. Human Development: A Life-span View. Eight Edition. Australia: Cengage, 2019.

Cita MLA (9th ed.)

Kail, Robert V., i John C. Cavanaugh. Human Development: A Life-span View. Eight Edition. Cengage, 2019.