APA (7th ed.) Citation

Penthouse Films International, General Media Entertainment (Firm), Image Entertainment (Firm), Guccione, B., Rossellini, F., Vidal, G., . . . Gielgud, J. (2007). Caligula (Imperial ed.). General Media Entertainment.

Chicago Style (17th ed.) Citation

Penthouse Films International, et al. Caligula. Imperial ed. [United States]: General Media Entertainment, 2007.

MLA (9th ed.) Citation

Penthouse Films International, et al. Caligula. Imperial ed. General Media Entertainment, 2007.