APA-ийн эшлэл(7 дахь хэвлэлт)

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

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

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

MLA -ийн эшлэл (9 дэх хэвлэлт)

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