APA (7th ed.) Citation

Lincoln, A. The opinions of Abraham Lincoln, upon slavery and its issues: Indicated by his speeches, letters, messages, and proclamations.

Chicago Style (17th ed.) Citation

Lincoln, Abraham. The Opinions of Abraham Lincoln, upon Slavery and Its Issues: Indicated by His Speeches, Letters, Messages, and Proclamations.

MLA (9th ed.) Citation

Lincoln, Abraham. The Opinions of Abraham Lincoln, upon Slavery and Its Issues: Indicated by His Speeches, Letters, Messages, and Proclamations.

Warning: These citations may not always be 100% accurate.