Cita APA (7th ed.)

Leroux, G. (1987). The phantom of the opera. Signet Classics.

Cita Chicago (17th ed.)

Leroux, Gaston. The Phantom of the Opera. New York: Signet Classics, 1987.

Cita MLA (9th ed.)

Leroux, Gaston. The Phantom of the Opera. Signet Classics, 1987.