APA (7th ed.) Citation

Penthouse Films International, Penthouse Video (Firm), Brass, T., McDowell, M., Savoy, T. A., O'Toole, P., . . . Prokofiev, S. (1999). Caligula (Rated edition, twentieth anniversary edition.). Penthouse Video.

Chicago Style (17th ed.) Citation

Penthouse Films International, et al. Caligula. Rated edition, twentieth anniversary edition. [United States]: Penthouse Video, 1999.

MLA (9th ed.) Citation

Penthouse Films International, et al. Caligula. Rated edition, twentieth anniversary edition. Penthouse Video, 1999.