APA (7th ed.) Citation

Rossini, G., Maggioni, M., & Rossi, G. (1848). Il Tancredi: Opera in two acts. Published and sold at The Royal Italian Opera.

Chicago Style (17th ed.) Citation

Rossini, Gioacchino, Manfredo Maggioni, and Gaetano Rossi. Il Tancredi: Opera in Two Acts. [London]: Published and sold at The Royal Italian Opera, 1848.

MLA (8th ed.) Citation

Rossini, Gioacchino, et al. Il Tancredi: Opera in Two Acts. Published and sold at The Royal Italian Opera, 1848.