APA (7th ed.) Zitazioa

Power of Gentleness. Fordham University Press.

Chicago Style (17th ed.) Zitazioa

Power of Gentleness. Fordham University Press.

MLA (9th ed.) Zitazioa

Power of Gentleness. Fordham University Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.