Dyfyniad APA

Cavanaugh, J. C., & Blanchard-Fields, F. (2019). Adult development and aging (Eight edition.). Cengage Learning.

Dyfyniad Arddull Chicago

Cavanaugh, John C., and Fredda Blanchard-Fields. Adult Development and Aging. Eight edition. Australia: Cengage Learning, 2019.

Dyfyniad MLA

Cavanaugh, John C., and Fredda Blanchard-Fields. Adult Development and Aging. Eight edition. Cengage Learning, 2019.

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