APA (7th ed.) Citation

Lincoln, A., Holzer, H., & Douglas, S. A. (1993). The Lincoln-Douglas debates: The first complete, unexpurgated text. HarperCollins Publishers.

Chicago Style (17th ed.) Citation

Lincoln, Abraham, Harold Holzer, and Stephen A. Douglas. The Lincoln-Douglas Debates: The First Complete, Unexpurgated Text. New York: HarperCollins Publishers, 1993.

MLA (8th ed.) Citation

Lincoln, Abraham, et al. The Lincoln-Douglas Debates: The First Complete, Unexpurgated Text. HarperCollins Publishers, 1993.