APA (7th ed.) Citation

Buzzell, E., Smith, L., Marx, G., Marx, C., & Marx, H. (2004). Im Zirkus. Warner.

Chicago Style (17th ed.) Citation

Buzzell, Edward, Leonard Smith, Groucho Marx, Chico Marx, and Harpo Marx. Im Zirkus. Hamburg: Warner, 2004.

MLA (9th ed.) Citation

Buzzell, Edward, et al. Im Zirkus. Warner, 2004.