Cita APA (7th ed.)
Smullyan, R. M. (2003). Who knows?: A study of religious consciousness. Indiana University Press.
Cita Chicago (17th ed.)
Smullyan, Raymond M. Who Knows?: A Study of Religious Consciousness. Bloomington: Indiana University Press, 2003.
Cita MLA (9th ed.)
Smullyan, Raymond M. Who Knows?: A Study of Religious Consciousness. Indiana University Press, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.