APA (7th ed.) Citation

HBO Home Entertainment (Firm), March of Time, Inc, & Van Voorhis, W. (1951). The war at sea. Home Box Office.

Chicago Style (17th ed.) Citation

HBO Home Entertainment (Firm), Inc March of Time, and Westbrook Van Voorhis. The War at Sea. New York, NY: Home Box Office, 1951.

MLA (9th ed.) Citation

HBO Home Entertainment (Firm), et al. The War at Sea. Home Box Office, 1951.