Dyfyniad APA
Pomeroy, E. S., & Etulain, R. W. (2008). The American Far West in the twentieth century. Yale University Press.
Dyfyniad Arddull Chicago
Pomeroy, Earl S., and Richard W. Etulain. The American Far West in the Twentieth Century. New Haven: Yale University Press, 2008.
Dyfyniad MLA
Pomeroy, Earl S., and Richard W. Etulain. The American Far West in the Twentieth Century. Yale University Press, 2008.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.