Ali, S. R. (1998). Digital switching systems: System reliability and analysis. Tata McGraw-Hill ; McGraw-Hill.
Chicago-referens (17:e uppl.)Ali, Syed Riffat. Digital Switching Systems: System Reliability and Analysis. New Delhi : New York: Tata McGraw-Hill ; McGraw-Hill, 1998.
MLA-referens (8:e uppl.)Ali, Syed Riffat. Digital Switching Systems: System Reliability and Analysis. Tata McGraw-Hill ; McGraw-Hill, 1998.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.