Cita APA (7th ed.)

Keach, S., Carroll, M., Keller, M., Coyote, P., National Geographic Society, & National Geographic Television. (2011). Restless planet.

Cita Chicago (17th ed.)

Keach, Stacy, Michael Carroll, Mark Keller, Peter Coyote, National Geographic Society, i National Geographic Television. Restless Planet. [Washington, D.C.], National Geographic Society, 2011.

Cita MLA (9th ed.)

Keach, Stacy, et al. Restless Planet. 2011.