APA (7th ed.) Citation

Waldman, C., Wexler, A., & Cunningham, J. (2004). Encyclopedia of exploration. Facts On File.

Chicago Style (17th ed.) Citation

Waldman, Carl, Alan Wexler, and Jon Cunningham. Encyclopedia of Exploration. New York, NY: Facts On File, 2004.

MLA (9th ed.) Citation

Waldman, Carl, et al. Encyclopedia of Exploration. Facts On File, 2004.