Black, U. D. (1995). The X series recommendations: Standards for data communications. New York: McGraw-Hill.
استشهاد بنمط شيكاغوBlack, Uyless D. The X Series Recommendations: Standards for Data Communications. New York: McGraw-Hill, 1995.
MLA استشهادBlack, Uyless D. The X Series Recommendations: Standards for Data Communications. New York: McGraw-Hill, 1995.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.