Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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