APA (7th ed.) Citation

Kirby, T., Evans, G., & Archer, M. (2010). Ancient worlds. British Broadcasting Corporation (BBC).

Chicago Style (17th ed.) Citation

Kirby, Tim, Gary Evans, and Melanie Archer. Ancient Worlds. London, England: British Broadcasting Corporation (BBC), 2010.

MLA (9th ed.) Citation

Kirby, Tim, et al. Ancient Worlds. British Broadcasting Corporation (BBC), 2010.