APA (7th ed.) Citation

Marvel, W. (2010). The great task remaining: The third year of Lincoln's war. Houghton Mifflin Harcourt.

Chicago Style (17th ed.) Citation

Marvel, William. The Great Task Remaining: The Third Year of Lincoln's War. Boston: Houghton Mifflin Harcourt, 2010.

MLA (9th ed.) Citation

Marvel, William. The Great Task Remaining: The Third Year of Lincoln's War. Houghton Mifflin Harcourt, 2010.