Black, U. D. (1995). The X series recommendations: Standards for data communications. New York: McGraw-Hill.
Čikaški stil citiranjaBlack, Uyless D. The X Series Recommendations: Standards for Data Communications. New York: McGraw-Hill, 1995.
MLA način citiranjaBlack, Uyless D. The X Series Recommendations: Standards for Data Communications. New York: McGraw-Hill, 1995.
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