APA (7th ed.) Citation

Trager, M. W. (1939). National parks of the Northwest. Dodd, Mead & Company.

Chicago Style (17th ed.) Citation

Trager, Martelle W. National Parks of the Northwest. New York: Dodd, Mead & Company, 1939.

MLA (9th ed.) Citation

Trager, Martelle W. National Parks of the Northwest. Dodd, Mead & Company, 1939.