APA (7th ed.) Citation

Grossmith, G., Gilbert, W. S., & Labiche, E. Haste to the wedding: An operetta.

Chicago Style (17th ed.) Citation

Grossmith, George, W. S. Gilbert, and Eugène Labiche. Haste to the Wedding: An Operetta.

MLA (8th ed.) Citation

Grossmith, George, et al. Haste to the Wedding: An Operetta.