Dyfyniad APA

Diane E Papalia, Harvey L Sterns, Ruth Duskin Feldman, & Cameron J Camp. (2002). Adult development and aging (2.). McGraw hill.

Dyfyniad Arddull Chicago

Diane E Papalia, Harvey L Sterns, Ruth Duskin Feldman, and Cameron J Camp. Adult Development and Aging. 2. New York: McGraw hill, 2002.

Dyfyniad MLA

Diane E Papalia, et al. Adult Development and Aging. 2. McGraw hill, 2002.

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