APA (7th ed.) Citation

Sheldon, H., & Holbrook, S. H. (1948). Northwest corner: Oregon and Washington: the last frontier (1. ed.). Doubleday.

Chicago Style (17th ed.) Citation

Sheldon, Henry, and Stewart Hall Holbrook. Northwest Corner: Oregon and Washington: The Last Frontier. 1. ed. Garden City, N.Y: Doubleday, 1948.

MLA (9th ed.) Citation

Sheldon, Henry, and Stewart Hall Holbrook. Northwest Corner: Oregon and Washington: The Last Frontier. 1. ed. Doubleday, 1948.