APA (7th ed.) Citation

Wilkes, G. (1845). The history of Oregon, geographical and political. W. H. Colyer.

Chicago Style (17th ed.) Citation

Wilkes, George. The History of Oregon, Geographical and Political. New York: W. H. Colyer, 1845.

MLA (9th ed.) Citation

Wilkes, George. The History of Oregon, Geographical and Political. W. H. Colyer, 1845.