Dyfyniad APA

James Jennifer,PH.D. (1999). Twenty Steps To Wisdom. Jakarta: PT.Gramedia Pustaka Utama.

Dyfyniad Arddull Chicago

James Jennifer,PH.D. Twenty Steps To Wisdom. Jakarta: PT.Gramedia Pustaka Utama, 1999.

Dyfyniad MLA

James Jennifer,PH.D. Twenty Steps To Wisdom. Jakarta: PT.Gramedia Pustaka Utama, 1999.

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