APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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