APA (7th ed.) Zitazioa
Ray, S. F. (1976). The lens in action. Hastings house.
Chicago Style (17th ed.) Zitazioa
Ray, Sidney F. The Lens in Action. New York: Hastings house, 1976.
MLA (9th ed.) Zitazioa
Ray, Sidney F. The Lens in Action. Hastings house, 1976.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.