Cita APA (7th ed.)
Sing, R., & Sapre, S. (2010). Communication systems: Analog and digital (2nd ed.). Tata McGraw Hill Education Pvt Ltd.
Cita Chicago (17th ed.)
Sing, R.P, i S.D Sapre. Communication Systems: Analog and Digital. 2nd ed. New Delhi: Tata McGraw Hill Education Pvt Ltd, 2010.
Cita MLA (9th ed.)
Sing, R.P, i S.D Sapre. Communication Systems: Analog and Digital. 2nd ed. Tata McGraw Hill Education Pvt Ltd, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.