Dyfyniad APA

SANTROCK, J. W. (2017). Life-span development. McGraw-Hill Education.

Dyfyniad Arddull Chicago

SANTROCK, John W. Life-span Development. McGraw-Hill Education, 2017.

Dyfyniad MLA

SANTROCK, John W. Life-span Development. McGraw-Hill Education, 2017.

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