APA (7th ed.) Citation

HBO Home Entertainment (Firm), March of Time, Inc, & Van Voorhis, W. (1940). Labor and defense. Home Box Office.

Chicago Style (17th ed.) Citation

HBO Home Entertainment (Firm), Inc March of Time, and Westbrook Van Voorhis. Labor and Defense. New York, NY: Home Box Office, 1940.

MLA (9th ed.) Citation

HBO Home Entertainment (Firm), et al. Labor and Defense. Home Box Office, 1940.