Held, G., & Sarch, R. (1989). Data communications: A comprehensive approach (2nd. ed.). New York: McGraw-Hill.
Chicago Style CitationHeld, Gilbert, and Ray Sarch. Data Communications: A Comprehensive Approach. 2nd. ed. New York: McGraw-Hill, 1989.
MLA CitationHeld, Gilbert, and Ray Sarch. Data Communications: A Comprehensive Approach. 2nd. ed. New York: McGraw-Hill, 1989.
Warning: These citations may not always be 100% accurate.