Dyfyniad APA

Berk, L. E. (2005). Infants, children, and adolescents. Boston: Pearson/Allyn and Bacon.

Dyfyniad Arddull Chicago

Berk, Laura E. Infants, Children, and Adolescents. Boston: Pearson/Allyn and Bacon, 2005.

Dyfyniad MLA

Berk, Laura E. Infants, Children, and Adolescents. Boston: Pearson/Allyn and Bacon, 2005.

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