Cita APA (7a ed.)

Ashby, W. R. (1984). An introduction to cybernetics. Methuen.

Cita Chicago Style (17a ed.)

Ashby, William Ross. An Introduction to Cybernetics. London [etc.]: Methuen, 1984.

Cita MLA (9a ed.)

Ashby, William Ross. An Introduction to Cybernetics. Methuen, 1984.