Welch, S. (1979). Signalling in telecommunications networks. Peter Peregrinus, on behalf of the Institution of Electrical Engineers.
Chicago Style (17. basım) AtıfWelch, Samuel. Signalling in Telecommunications Networks. Stevenage: Peter Peregrinus, on behalf of the Institution of Electrical Engineers, 1979.
MLA (9th ed.) AtıfWelch, Samuel. Signalling in Telecommunications Networks. Peter Peregrinus, on behalf of the Institution of Electrical Engineers, 1979.
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