APA (7th ed.) Citation

Universal Pictures (Firm), McCarey, L., Marx, G., Marx, C., Marx, H., Marx, Z., & Dumont, M. (2004). Duck soup. Universal Studios.

Chicago Style (17th ed.) Citation

Universal Pictures (Firm), Leo McCarey, Groucho Marx, Chico Marx, Harpo Marx, Zeppo Marx, and Margaret Dumont. Duck Soup. Universal City, CA: Universal Studios, 2004.

MLA (8th ed.) Citation

Universal Pictures (Firm), et al. Duck Soup. Universal Studios, 2004.

Warning: These citations may not always be 100% accurate.