APA (7th ed.) Citation

Nichols, J., & Nichols, R. F. (1942). The Republic of the United States: A history. D. Appleton-Century.

Chicago Style (17th ed.) Citation

Nichols, Jeannette, and Roy Franklin Nichols. The Republic of the United States: A History. New York: D. Appleton-Century, 1942.

MLA (9th ed.) Citation

Nichols, Jeannette, and Roy Franklin Nichols. The Republic of the United States: A History. D. Appleton-Century, 1942.