Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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