APA (7th ed.) Citation

Burgoyne, J., Sedaine, Grétry, A., & Linley, T. Richard Coeur de Lion: An historical romance.

Chicago Style (17th ed.) Citation

Burgoyne, John, Sedaine, André-Ernest-Modeste Grétry, and Thomas Linley. Richard Coeur De Lion: An Historical Romance.

MLA (8th ed.) Citation

Burgoyne, John, et al. Richard Coeur De Lion: An Historical Romance.