Dyfyniad APA

Susan Krauss Whitbourne & Stacey B Whitbourne. (2008). Adult development and aging: Biopsychosocial perspectives. John willey and sons.

Dyfyniad Arddull Chicago

Susan Krauss Whitbourne and Stacey B Whitbourne. Adult Development and Aging: Biopsychosocial Perspectives. John willey and sons, 2008.

Dyfyniad MLA

Susan Krauss Whitbourne and Stacey B Whitbourne. Adult Development and Aging: Biopsychosocial Perspectives. John willey and sons, 2008.

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