APA (7th ed.) Citation

Downer, J., & Tennant, D. (2014). Earthflight. BBC Earth.

Chicago Style (17th ed.) Citation

Downer, John, and David Tennant. Earthflight. [London?]: BBC Earth, 2014.

MLA (8th ed.) Citation

Downer, John, and David Tennant. Earthflight. BBC Earth, 2014.

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