Cita APA (7a ed.)

Wheeler, J. H., Trenton Kostbade, J., & Thoman, R. S. (1955). Regional geography of the world: An introductory survey. s.n..

Cita Chicago Style (17a ed.)

Wheeler, Jesse H., J. Trenton Kostbade, y Richard S. Thoman. Regional Geography of the World: An Introductory Survey. New York: s.n., 1955.

Cita MLA (9a ed.)

Wheeler, Jesse H., et al. Regional Geography of the World: An Introductory Survey. s.n., 1955.