APA引文

Johnson, M. P. (2011). Abraham Lincoln, slavery, and the Civil War: Selected writings and speeches (2nd ed.). Boston: Bedford/St. Martin's.

Trích dẫn kiểu Chicago

Johnson, Michael P. Abraham Lincoln, Slavery, and the Civil War: Selected Writings and Speeches. 2nd ed. Boston: Bedford/St. Martin's, 2011.

MLA引文

Johnson, Michael P. Abraham Lincoln, Slavery, and the Civil War: Selected Writings and Speeches. 2nd ed. Boston: Bedford/St. Martin's, 2011.

警告：這些引文格式不一定是100％准確.