APA (7th ed.) Citation

Post, A. (1974). Popular freethought in America, 1825-1850. Octagon Books.

Chicago Style (17th ed.) Citation

Post, Albert. Popular Freethought in America, 1825-1850. New York: Octagon Books, 1974.

MLA (9th ed.) Citation

Post, Albert. Popular Freethought in America, 1825-1850. Octagon Books, 1974.

Warning: These citations may not always be 100% accurate.