APA (7th ed.) Citation

HBO Home Entertainment (Firm), March of Time, Inc, & Van Voorhis, W. (1937). Harlem's black magic. Home Box Office.

Chicago Style (17th ed.) Citation

HBO Home Entertainment (Firm), Inc March of Time, and Westbrook Van Voorhis. Harlem's Black Magic. New York, NY: Home Box Office, 1937.

MLA (9th ed.) Citation

HBO Home Entertainment (Firm), et al. Harlem's Black Magic. Home Box Office, 1937.