Dyfyniad APA
Santrock, J. W. (2006). Life-span development (10th ed.). McGraw-Hill.
Dyfyniad Arddull Chicago
Santrock, John W. Life-span Development. 10th ed. Boston, Mass.: McGraw-Hill, 2006.
Dyfyniad MLA
Santrock, John W. Life-span Development. 10th ed. McGraw-Hill, 2006.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.