Pecar, J. A., & Garbin, D. A. (2000). The new McGraw-Hill telecom factbook (2nd ed.). McGraw-Hill.

Pecar, Joseph A., and David A. Garbin. The New McGraw-Hill Telecom Factbook. 2nd ed. New York: McGraw-Hill, 2000.

Pecar, Joseph A., and David A. Garbin. The New McGraw-Hill Telecom Factbook. 2nd ed. McGraw-Hill, 2000.