APA (7th ed.) Citation

Parkman, F., & Douglas, C. H. J. (1910). The Oregon trail: Sketches of prairie and Rocky Mountain life. Macmillan.

Chicago Style (17th ed.) Citation

Parkman, Francis, and Charles Henry James Douglas. The Oregon Trail: Sketches of Prairie and Rocky Mountain Life. New York: Macmillan, 1910.

MLA (9th ed.) Citation

Parkman, Francis, and Charles Henry James Douglas. The Oregon Trail: Sketches of Prairie and Rocky Mountain Life. Macmillan, 1910.