Cita APA (7a ed.)

Ennals, J. R. (1987). Artificial intelligence. Pergamon Infotech.

Cita Chicago Style (17a ed.)

Ennals, J. R. Artificial Intelligence. Oxford [Oxfordshire] ; New York: Pergamon Infotech, 1987.

Cita MLA (8a ed.)

Ennals, J. R. Artificial Intelligence. Pergamon Infotech, 1987.