APA (7th ed.) Zitazioa
Shaw, B. (1946). Plays unpleasant. Penguin books.
Chicago Style (17th ed.) Zitazioa
Shaw, Bernard. Plays Unpleasant. New York: Penguin books, 1946.
MLA (9th ed.) Zitazioa
Shaw, Bernard. Plays Unpleasant. Penguin books, 1946.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.