APA (7th ed.) Citation

Owen, R. (1920). The life of Robert Owen. A. A. Knopf.

Chicago Style (17th ed.) Citation

Owen, Robert. The Life of Robert Owen. New York: A. A. Knopf, 1920.

MLA (8th ed.) Citation

Owen, Robert. The Life of Robert Owen. A. A. Knopf, 1920.