Shakespeare, W. (2001). Twelfth night. Alex Catalogue.
Chicago Style (17th ed.) ZitazioaShakespeare, William. Twelfth Night. Raleigh, NC: Alex Catalogue, 2001.
MLA (9th ed.) ZitazioaShakespeare, William. Twelfth Night. Alex Catalogue, 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.