Dyfyniad APA

301998 Santrock, J. W. (2011). Life-span development. New York, NY : McGraw-Hill Higher Education.

Dyfyniad Arddull Chicago

301998 Santrock, John W. Life-span Development. New York, NY : McGraw-Hill Higher Education, 2011.

Dyfyniad MLA

301998 Santrock, John W. Life-span Development. New York, NY : McGraw-Hill Higher Education, 2011.

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