APA (7th ed.) Citation

Marx Brothers, Universal Pictures (Firm), Paramount Pictures Corporation (1914-1927), McCarey, L., Kalmar, B., Ruby, H., . . . Kennedy, E. (2004). Duck soup. Universal.

Chicago Style (17th ed.) Citation

Marx Brothers, et al. Duck Soup. Universal City, CA: Universal, 2004.

MLA (9th ed.) Citation

Marx Brothers, et al. Duck Soup. Universal, 2004.