Dyfyniad APA

Papalia, D. E., Feldman, R. D., & Martorell, G. (2007). Human development (Tenth edition.). McGrawHill.

Dyfyniad Arddull Chicago

Papalia, Diane E., Ruth Duskin Feldman, and Gabriela Martorell. Human Development. Tenth edition. Boston: McGrawHill, 2007.

Dyfyniad MLA

Papalia, Diane E., et al. Human Development. Tenth edition. McGrawHill, 2007.

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