Forouzan, Behrouz A.
Data communications and networking
McGraw-Hill, 2002
 Buku Teks SO
Stallings, William
Data and computer communications
Macmillan, 1985
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Stalling, William
Data and computer communications
Maxwell Macmillan International, 1991
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Forouzan, Behrouz A.
Data communications and networking
McGraw-Hill, 2013
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Stallings, William
Data and computer communications
Prentice-Hall, 2004
 Buku Teks SO