APA (7th ed.) Zitazioa
Barna, G. (2003). Transforming children into spiritual champions. Regal.
Chicago Style (17th ed.) Zitazioa
Barna, George. Transforming Children into Spiritual Champions. Califonia, USA: Regal, 2003.
MLA (9th ed.) Zitazioa
Barna, George. Transforming Children into Spiritual Champions. Regal, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.