Cita APA (7a ed.)

Bell, A. G. (1978). The machine plays chess? Pergamon.

Cita Chicago Style (17a ed.)

Bell, A. G. The Machine Plays Chess? Oxford [etc.]: Pergamon, 1978.

Cita MLA (9a ed.)

Bell, A. G. The Machine Plays Chess? Pergamon, 1978.