APA (7th ed.) Citation

Rossini, G., Sterbini, C., Sullivan, A., & Beaumarchais, P. A. C. d. (1870). Il barbiere: Opera in two acts. Boosey.

Chicago Style (17th ed.) Citation

Rossini, Gioacchino, Cesare Sterbini, Arthur Sullivan, and Pierre Augustin Caron de Beaumarchais. Il Barbiere: Opera in Two Acts. London ; New York: Boosey, 1870.

MLA (8th ed.) Citation

Rossini, Gioacchino, et al. Il Barbiere: Opera in Two Acts. Boosey, 1870.