APA (7th ed.) Zitazioa

O'Connor, D. (1971). Free will. Macmillan.

Chicago Style (17th ed.) Zitazioa

O'Connor, D.J. Free Will. London: Macmillan, 1971.

MLA (9th ed.) Zitazioa

O'Connor, D.J. Free Will. Macmillan, 1971.