Cita APA (7th ed.)

Lion Television Ltd, National Geographic Television & Film, National Geographic Society (U.S.), Warner Home Video (Firm), & Diamond, J. M. G. (2005). Guns, germs, and steel. National Geographic ; Distributed by Warner Home Video.

Cita Chicago (17th ed.)

Lion Television Ltd, National Geographic Television & Film, National Geographic Society (U.S.), Warner Home Video (Firm), i Jared M. Guns Diamond. Guns, Germs, and Steel. [United States] : [Burbank, Calif.]: National Geographic ; Distributed by Warner Home Video, 2005.

Cita MLA (9th ed.)

Lion Television Ltd, et al. Guns, Germs, and Steel. National Geographic ; Distributed by Warner Home Video, 2005.