APA (7th ed.) Citation

Campion, C., Chooper, T., George, T., & Leary, J. (2004). The rough guide to London restaurants. Rough guides.

Chicago Style (17th ed.) Citation

Campion, Charles, Tim Chooper, Theo George, and Jan Leary. The Rough Guide to London Restaurants. London: Rough guides, 2004.

MLA (9th ed.) Citation

Campion, Charles, et al. The Rough Guide to London Restaurants. Rough guides, 2004.