CARR, H. H., & SNYDER, C. A. (2003). Management of telecommunications: Business solutions to business problems enabled by voice.....-- ed.2. McGraw-Hill.

CARR, Houston H., and Charles A. SNYDER. Management of Telecommunications: Business Solutions to Business Problems Enabled by Voice.....-- Ed.2. Boston: McGraw-Hill, 2003.

CARR, Houston H., and Charles A. SNYDER. Management of Telecommunications: Business Solutions to Business Problems Enabled by Voice.....-- Ed.2. McGraw-Hill, 2003.