APA (7th ed.) Zitazioa
O'Connell, R. J. (1997). William James on the courage to believe (Second edition.). Fordham University Press.
Chicago Style (17th ed.) Zitazioa
O'Connell, Robert J. William James on the Courage to Believe. Second edition. New York: Fordham University Press, 1997.
MLA (9th ed.) Zitazioa
O'Connell, Robert J. William James on the Courage to Believe. Second edition. Fordham University Press, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.