Dyfyniad APA

Papalia, D. E., Feldman, R. D., & Olds, S. W. (2004). Human development (9th ed.). Boston: McGraw-Hill.

Dyfyniad Arddull Chicago

Papalia, Diane E., Ruth Duskin Feldman, và Sally Wendkos Olds. Human Development. 9th ed. Boston: McGraw-Hill, 2004.

Dyfyniad MLA

Papalia, Diane E., Ruth Duskin Feldman, và Sally Wendkos Olds. Human Development. 9th ed. Boston: McGraw-Hill, 2004.

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