APA (7th ed.) Citation

Biswas, N. N. (1993). Principles of telegraphy.

Chicago Style (17th ed.) Citation

Biswas, Nripendra N. Principles of Telegraphy. New Delhi : Media promoters & Publishers, 1993.

MLA (9th ed.) Citation

Biswas, Nripendra N. Principles of Telegraphy. 1993.