APA (7th ed.) Citation

Nagel, P. C. (1964). One nation indivisible: The Union in American thought, 1776-1861. Oxford U.P..

Chicago Style (17th ed.) Citation

Nagel, Paul C. One Nation Indivisible: The Union in American Thought, 1776-1861. New York: Oxford U.P., 1964.

MLA (8th ed.) Citation

Nagel, Paul C. One Nation Indivisible: The Union in American Thought, 1776-1861. Oxford U.P., 1964.