APA (7th ed.) Citation

Wilson, R., & Greenwood, S. (1998). The zoo keepers. BBC Worldwide.

Chicago Style (17th ed.) Citation

Wilson, Richard, and Steve Greenwood. The Zoo Keepers. London, England: BBC Worldwide, 1998.

MLA (9th ed.) Citation

Wilson, Richard, and Steve Greenwood. The Zoo Keepers. BBC Worldwide, 1998.