Cita APA (7th ed.)
Ali, S. R. (2002). Digital switching systems. Tata McGraw-Hill.
Cita Chicago (17th ed.)
Ali, Syed Riffat. Digital Switching Systems. New Delhi: Tata McGraw-Hill, 2002.
Cita MLA (9th ed.)
Ali, Syed Riffat. Digital Switching Systems. Tata McGraw-Hill, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.