Lincoln, A., Douglas, S. A., & Putnam, G. H. (1912). The political debates between Abraham Lincoln and Stephen A. Douglas in the senatorial campaign of 1858 in Illinois: Together with certain preceding speeches of each at Chicago, Springfield, etc. G.P. Putnam's Sons.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Lincoln, Abraham, Stephen A. Douglas, và George Haven Putnam. The Political Debates Between Abraham Lincoln and Stephen A. Douglas in the Senatorial Campaign of 1858 in Illinois: Together with Certain Preceding Speeches of Each at Chicago, Springfield, Etc. New York: G.P. Putnam's Sons, 1912.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Lincoln, Abraham, et al. The Political Debates Between Abraham Lincoln and Stephen A. Douglas in the Senatorial Campaign of 1858 in Illinois: Together with Certain Preceding Speeches of Each at Chicago, Springfield, Etc. G.P. Putnam's Sons, 1912.