APA Style

II, L, W, C. (2001). Digital and Analog Communication Systems (6th Edition). Upper Saddle River, NJ: Prentice Hall (Pearson Education).

MLA Style

II, Leon, W., Couch. "Digital and Analog Communication Systems". 6th Edition Upper Saddle River, NJ: Prentice Hall (Pearson Education), 2001. Text.