APA (7e ed.) Bronvermelding

Campbell, R. (1977). The Enigma of the mind. Time-Life International.

Chicago (17e ed.) Bronvermelding

Campbell, Robert. The Enigma of the Mind. Nederland B.V: Time-Life International, 1977.

MLA (9e ed.) Bronvermelding

Campbell, Robert. The Enigma of the Mind. Time-Life International, 1977.