Cita APA (7th ed.)

Sadie, S. (1998). The New Grove Dictionary of Opera. Macmillan.

Cita Chicago (17th ed.)

Sadie, Stanley. The New Grove Dictionary of Opera. London [u.a.]: Macmillan, 1998.

Cita MLA (8th ed.)

Sadie, Stanley. The New Grove Dictionary of Opera. Macmillan, 1998.