APA (7th ed.) Citation

Thomas, B. P. (1973). Abraham Lincoln: A biography (1st paperback ed.). Knopf.

Chicago Style (17th ed.) Citation

Thomas, Benjamin Platt. Abraham Lincoln: A Biography. 1st paperback ed. New York: Knopf, 1973.

MLA (9th ed.) Citation

Thomas, Benjamin Platt. Abraham Lincoln: A Biography. 1st paperback ed. Knopf, 1973.

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