APA
Couch L. W., . (2014). Digital and analog communication systems.-8th ed. Noida: Pearson.
Chicago
Couch Leon W, . 2014. Digital and analog communication systems.-8th ed. Noida: Pearson.
Harvard
Couch L. W., . (2014). Digital and analog communication systems.-8th ed. Noida: Pearson.
MLA
Couch Leon W, . Digital and analog communication systems.-8th ed. Noida: Pearson. 2014.