Viswanathan, T. (1992). Telecommunication switching systems and networks. Prentice Hall of India Private Ltd..
Chicago-viite (17. p.)Viswanathan, Thiagarajan. Telecommunication Switching Systems and Networks. New Delhi: Prentice Hall of India Private Ltd., 1992.
MLA-viite (8. p.)Viswanathan, Thiagarajan. Telecommunication Switching Systems and Networks. Prentice Hall of India Private Ltd., 1992.
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