Bates, R. J., & Gregory , D. W. (2007). Voice and data communications handbook (5th ed.). Tata McGraw-Hill Pub. Co. Ltd..
Chicago Edition CitationBates, Regis J., and Donald W. Gregory. Voice and Data Communications Handbook. 5th ed. New Delhi: Tata McGraw-Hill Pub. Co. Ltd., 2007.
Deismireacht MLABates, Regis J., and Donald W. Gregory. Voice and Data Communications Handbook. 5th ed. Tata McGraw-Hill Pub. Co. Ltd., 2007.
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