Chicago: Abraham Lincoln, "Fourth Joint Debate, at Charleston, September 18, 1858.," The Writings of Abraham Lincoln— Volume 4: The Lincoln-Douglas Debates, ed. Jameson, J. Franklin (John Franklin), 1859-1937 in The Writings of Abraham Lincoln—Volume 4: The Lincoln-Douglas Debates Original Sources, accessed April 3, 2025, http://originalsources.com/Document.aspx?DocID=2RSQIHVLYLXDZWT.
MLA: Lincoln, Abraham. "Fourth Joint Debate, at Charleston, September 18, 1858." The Writings of Abraham Lincoln— Volume 4: The Lincoln-Douglas Debates, edited by Jameson, J. Franklin (John Franklin), 1859-1937, in The Writings of Abraham Lincoln—Volume 4: The Lincoln-Douglas Debates, Original Sources. 3 Apr. 2025. http://originalsources.com/Document.aspx?DocID=2RSQIHVLYLXDZWT.
Harvard: Lincoln, A, 'Fourth Joint Debate, at Charleston, September 18, 1858.' in The Writings of Abraham Lincoln— Volume 4: The Lincoln-Douglas Debates, ed. . cited in , The Writings of Abraham Lincoln—Volume 4: The Lincoln-Douglas Debates. Original Sources, retrieved 3 April 2025, from http://originalsources.com/Document.aspx?DocID=2RSQIHVLYLXDZWT.