Cita APA (7a ed.)

Koestler, A. (1989). The ghost in the machine. Arkana.

Cita Chicago Style (17a ed.)

Koestler, Arthur. The Ghost in the Machine. London: Arkana, 1989.

Cita MLA (9a ed.)

Koestler, Arthur. The Ghost in the Machine. Arkana, 1989.