APA (7th ed.) Citation

Lerner, B., & Walmsley, C. (1991). Horizon. BBC Worldwide.

Chicago Style (17th ed.) Citation

Lerner, Bettina, and Claire Walmsley. Horizon. London, England: BBC Worldwide, 1991.

MLA (9th ed.) Citation

Lerner, Bettina, and Claire Walmsley. Horizon. BBC Worldwide, 1991.

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