Dyfyniad APA

Cavanaugh, J. C., & Blanchard-Fields, F. (2015). Adult development and aging (7th edition.). Cengage Learning.

Dyfyniad Arddull Chicago

Cavanaugh, John C., and Fredda Blanchard-Fields. Adult Development and Aging. 7th edition. Stamford, CT: Cengage Learning, 2015.

Dyfyniad MLA

Cavanaugh, John C., and Fredda Blanchard-Fields. Adult Development and Aging. 7th edition. Cengage Learning, 2015.

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