APA (7th ed.) Citation

Billington, R. A. (1959). The westward movement in the United States. Van Nostrand.

Chicago Style (17th ed.) Citation

Billington, Ray Allen. The Westward Movement in the United States. Princeton, N.J.: Van Nostrand, 1959.

MLA (8th ed.) Citation

Billington, Ray Allen. The Westward Movement in the United States. Van Nostrand, 1959.