APA (7th ed.) Citation

Bernstein, L., Leonard, L., & Sondheim, S. (1966). West Side Story: Leonard Bernstein. Saga.

Chicago Style (17th ed.) Citation

Bernstein, Leonard, Lawrence Leonard, and Stephan Sondheim. West Side Story: Leonard Bernstein. London: Saga, 1966.

MLA (8th ed.) Citation

Bernstein, Leonard, et al. West Side Story: Leonard Bernstein. Saga, 1966.