APA (7th ed.) Citation

Sobel, R. (1971). Conquest and conscience: The 1840's. Crowell.

Chicago Style (17th ed.) Citation

Sobel, Robert. Conquest and Conscience: The 1840's. New York: Crowell, 1971.

MLA (9th ed.) Citation

Sobel, Robert. Conquest and Conscience: The 1840's. Crowell, 1971.