Dyfyniad APA

Cavanaugh, J. C., Blanchard-Fields, F., & Norris, J. E. (2008). Adult development and aging (1st Canadian ed.). Thomson/Nelson.

Dyfyniad Arddull Chicago

Cavanaugh, John C., Fredda Blanchard-Fields, and Joan E. Norris. Adult Development and Aging. 1st Canadian ed. Toronto, Ontario: Thomson/Nelson, 2008.

Dyfyniad MLA

Cavanaugh, John C., et al. Adult Development and Aging. 1st Canadian ed. Thomson/Nelson, 2008.

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