Cita APA (7a ed.)

Bellini, V., Romani, F., Soumet, A., Sullivan, A., & Pittman, J. (1870). Norma: Opera in two acts. Boosey.

Cita Chicago Style (17a ed.)

Bellini, Vincenzo, Felice Romani, Alexandre Soumet, Arthur Sullivan, y J. Pittman. Norma: Opera in Two Acts. London ; New York: Boosey, 1870.

Cita MLA (8a ed.)

Bellini, Vincenzo, et al. Norma: Opera in Two Acts. Boosey, 1870.