APA (7th ed.) Citation

British Broadcasting Corporation, Walk, N., & Stewart, I. S. (2012). How to grow a planet. British Broadcasting Corporation (BBC).

Chicago Style (17th ed.) Citation

British Broadcasting Corporation, Nigel Walk, and Iain S. Stewart. How to Grow a Planet. London, England: British Broadcasting Corporation (BBC), 2012.

MLA (9th ed.) Citation

British Broadcasting Corporation, et al. How to Grow a Planet. British Broadcasting Corporation (BBC), 2012.