APA (7th ed.) Citation

National Geographic Society (U.S.), National Geographic Channel (Television station : Washington, D.C.), Warner Home Video (Firm), Maltby, C., & Vargas, E. (2008). Human footprint (Widescreen version.). Distributed by Warner Home Video.

Chicago Style (17th ed.) Citation

National Geographic Society (U.S.), D.C.) National Geographic Channel (Television station : Washington, Warner Home Video (Firm), Clive Maltby, and Elizabeth Vargas. Human Footprint. Widescreen version. [Burbank, Calif.]: Distributed by Warner Home Video, 2008.

MLA (8th ed.) Citation

National Geographic Society (U.S.), et al. Human Footprint. Widescreen version. Distributed by Warner Home Video, 2008.

Warning: These citations may not always be 100% accurate.