Cita APA

Pomeroy, E. S., & Etulain, R. W. (2008). The American Far West in the twentieth century. Yale University Press.

Citación estilo Chicago

Pomeroy, Earl S., and Richard W. Etulain. The American Far West in the Twentieth Century. New Haven: Yale University Press, 2008.

Cita MLA

Pomeroy, Earl S., and Richard W. Etulain. The American Far West in the Twentieth Century. Yale University Press, 2008.