APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.