APA (7th ed.) Zitazioa

Thorp. Facing Freedom. University of Virginia Press.

Chicago Style (17th ed.) Zitazioa

Thorp. Facing Freedom. University of Virginia Press.

MLA (9th ed.) Zitazioa

Thorp. Facing Freedom. University of Virginia Press.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.