APA (7th ed.) Zitazioa
Hillman, B. (1989). Fortress. Wesleyan University Press.
Chicago Style (17th ed.) Zitazioa
Hillman, Brenda. Fortress. Middletown, Conn.: Wesleyan University Press, 1989.
MLA (9th ed.) Zitazioa
Hillman, Brenda. Fortress. Wesleyan University Press, 1989.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.