Cita APA (7th ed.)

Leroux, G. (1991). The phantom of the opera. Warner Books.

Cita Chicago (17th ed.)

Leroux, Gaston. The Phantom of the Opera. New York: Warner Books, 1991.

Cita MLA (9th ed.)

Leroux, Gaston. The Phantom of the Opera. Warner Books, 1991.