APA (7th ed.) Citation

Kohn, M., Kohnstamm, T., & Landon, R. (2006). Colombia. Lonely Planet Publications.

Chicago Style (17th ed.) Citation

Kohn, Michael, Thomas Kohnstamm, and Robert Landon. Colombia. Australia: Lonely Planet Publications, 2006.

MLA (9th ed.) Citation

Kohn, Michael, et al. Colombia. Lonely Planet Publications, 2006.