APA (7th ed.) Citation

Lincoln, A., & Maclean, M. (1907). Letters and addresses of Abraham Lincoln. Unit Book Publishing Co..

Chicago Style (17th ed.) Citation

Lincoln, Abraham, and Mary Maclean. Letters and Addresses of Abraham Lincoln. New York: Unit Book Publishing Co., 1907.

MLA (9th ed.) Citation

Lincoln, Abraham, and Mary Maclean. Letters and Addresses of Abraham Lincoln. Unit Book Publishing Co., 1907.