APA (7th ed.) Citation

Biswas, N. (2000). Principles of Telephony. Radient Books.

Chicago Style (17th ed.) Citation

Biswas, N.N. Principles of Telephony. India: Radient Books, 2000.

MLA (9th ed.) Citation

Biswas, N.N. Principles of Telephony. Radient Books, 2000.