Dyfyniad APA

Shaffer, D. R. (2009). Social and personality development (6th ed.). Wadsworth/Cengage Learning.

Dyfyniad Arddull Chicago

Shaffer, David R. Social and Personality Development. 6th ed. Australia: Wadsworth/Cengage Learning, 2009.

Dyfyniad MLA

Shaffer, David R. Social and Personality Development. 6th ed. Wadsworth/Cengage Learning, 2009.

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