APA (7th ed.) Zitazioa
Stone, B. (1974). Sir Gawain and the Green Knight (2nd ed.). Penguin.
Chicago Style (17th ed.) Zitazioa
Stone, Brian. Sir Gawain and the Green Knight. 2nd ed. Harmondsworth: Penguin, 1974.
MLA (9th ed.) Zitazioa
Stone, Brian. Sir Gawain and the Green Knight. 2nd ed. Penguin, 1974.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.