APA (7th ed.) Citation

Powell, N. C., & McCrory, H. (2011). Horizon. BBC Worldwide.

Chicago Style (17th ed.) Citation

Powell, Nick Clarke, and Helen McCrory. Horizon. London, England: BBC Worldwide, 2011.

MLA (9th ed.) Citation

Powell, Nick Clarke, and Helen McCrory. Horizon. BBC Worldwide, 2011.

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