Cita APA (7th ed.)

COUCH II, L. W. (1997). Digital and analog communication systems.-- ed.5. Prentica Hall.

Cita Chicago (17th ed.)

COUCH II, Leon W. Digital and Analog Communication Systems.-- Ed.5. London: Prentica Hall, 1997.

Cita MLA (9th ed.)

COUCH II, Leon W. Digital and Analog Communication Systems.-- Ed.5. Prentica Hall, 1997.