APA (7th ed.) Citation

Bruce, J., & Beckingham, C. F. (1964). Travels to discover the source of the Nile. Horizon Press.

Chicago Style (17th ed.) Citation

Bruce, James, and C. F. Beckingham. Travels to Discover the Source of the Nile. New York: Horizon Press, 1964.

MLA (8th ed.) Citation

Bruce, James, and C. F. Beckingham. Travels to Discover the Source of the Nile. Horizon Press, 1964.