APA (7th ed.) Citation

Richardson, N. S. (1864). The Union, the Constitution, and slavery .. [publisher not identified].

Chicago Style (17th ed.) Citation

Richardson, N. S. The Union, the Constitution, and Slavery .. New York: [publisher not identified], 1864.

MLA (9th ed.) Citation

Richardson, N. S. The Union, the Constitution, and Slavery .. [publisher not identified], 1864.

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