APA (7th ed.) Citation

Billington, R. A., & Hedges, J. B. (1949). Westward expansion: A history of the American frontier. Macmillan Co..

Chicago Style (17th ed.) Citation

Billington, Ray Allen, and James Blaine Hedges. Westward Expansion: A History of the American Frontier. New York: Macmillan Co., 1949.

MLA (9th ed.) Citation

Billington, Ray Allen, and James Blaine Hedges. Westward Expansion: A History of the American Frontier. Macmillan Co., 1949.