APA (7th ed.) Citation

Feynman, R. P., & Sykes, C. (1981). Horizon: Richard Feynman. BBC Worldwide.

Chicago Style (17th ed.) Citation

Feynman, Richard P., and Christopher Sykes. Horizon: Richard Feynman. London, England: BBC Worldwide, 1981.

MLA (9th ed.) Citation

Feynman, Richard P., and Christopher Sykes. Horizon: Richard Feynman. BBC Worldwide, 1981.