Stamper, D. A. (1989). Business data communications: Instructor's guide for .. (2nd ed.). Benjamin/Cumming.
Lua i Stíl Chicago (17ú heag.)Stamper, David A. Business Data Communications: Instructor's Guide for .. 2nd ed. Calif: Benjamin/Cumming, 1989.
Lua MLA (9ú heag.)Stamper, David A. Business Data Communications: Instructor's Guide for .. 2nd ed. Benjamin/Cumming, 1989.
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