APA (7th ed.) Citation

Howard, F. (1987). Wilbur and Orville: A biography of the Wright brothers (1st. ed.). Knopf.

Chicago Style (17th ed.) Citation

Howard, Fred. Wilbur and Orville: A Biography of the Wright Brothers. 1st. ed. New York: Knopf, 1987.

MLA (9th ed.) Citation

Howard, Fred. Wilbur and Orville: A Biography of the Wright Brothers. 1st. ed. Knopf, 1987.