Tohutoro APA (7th ed.)

Biswas, N. N. (1964). Principles of telegraphy. Media promoters & Publishers.

Tohutoru Kātū Chicago (17th ed.)

Biswas, Nripendra N. Principles of Telegraphy. New Delhi: Media promoters & Publishers, 1964.

Tohutoro MLA (9th ed.)

Biswas, Nripendra N. Principles of Telegraphy. Media promoters & Publishers, 1964.