APA (7th ed.) Citation

Perelman, S. J., Johnstone, W. B., Ruby, H., & Kalmar, B. (1972). The Four Marx Brothers in Monkey business and Duck soup. Lorrimer publishing.

Chicago Style (17th ed.) Citation

Perelman, S. J., W. B. Johnstone, Harry Ruby, and Bert Kalmar. The Four Marx Brothers in Monkey Business and Duck Soup. London: Lorrimer publishing, 1972.

MLA (9th ed.) Citation

Perelman, S. J., et al. The Four Marx Brothers in Monkey Business and Duck Soup. Lorrimer publishing, 1972.