APA (7th ed.) Citation

Collis, J. (1973). Modern course for the clarinet (Rev. ed.). Elkan.

Chicago Style (17th ed.) Citation

Collis, James. Modern Course for the Clarinet. Rev. ed. Philadelphia, Pa: Elkan, 1973.

MLA (9th ed.) Citation

Collis, James. Modern Course for the Clarinet. Rev. ed. Elkan, 1973.