Cita APA (7a ed.)

Brewster, R. L. (1989). Communication systems and computer networks. Ellis Horwood [etc.].

Cita Chicago Style (17a ed.)

Brewster, R. L. Communication Systems and Computer Networks. Chichester [etc.]: Ellis Horwood [etc.], 1989.

Cita MLA (9a ed.)

Brewster, R. L. Communication Systems and Computer Networks. Ellis Horwood [etc.], 1989.