APA (7th ed.) Citation

Shakespeare, W., Bernstein, L., Laurents, A., & Sondheim, S. (1965). Romeo and Juliet: West Side story. Dell.

Chicago Style (17th ed.) Citation

Shakespeare, William, Leonard Bernstein, Arthur Laurents, and Stephen Sondheim. Romeo and Juliet: West Side Story. New York: Dell, 1965.

MLA (9th ed.) Citation

Shakespeare, William, et al. Romeo and Juliet: West Side Story. Dell, 1965.