Dyfyniad APA

Kail, R. V., & Cavanaugh, J. C. (2016). Human development: A life-span view (Seventh edition.). Cengage Learning.

Dyfyniad Arddull Chicago

Kail, Robert V., and John C. Cavanaugh. Human Development: A Life-span View. Seventh edition. Boston, Massachusetts: Cengage Learning, 2016.

Dyfyniad MLA

Kail, Robert V., and John C. Cavanaugh. Human Development: A Life-span View. Seventh edition. Cengage Learning, 2016.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.