APA (7th ed.) Citation

Biswas, N. N. (1970). Principles of Telephony. Radiant Books.

Chicago Style (17th ed.) Citation

Biswas, N. N. Principles of Telephony. India: Radiant Books, 1970.

MLA (9th ed.) Citation

Biswas, N. N. Principles of Telephony. Radiant Books, 1970.