Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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