Black, U. D. (1995). The X series recommendations: Standards for data communications. New York: McGraw-Hill.
Trích dẫn kiểu ChicagoBlack, Uyless D. The X Series Recommendations: Standards for Data Communications. New York: McGraw-Hill, 1995.
Deismireacht MLABlack, Uyless D. The X Series Recommendations: Standards for Data Communications. New York: McGraw-Hill, 1995.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.