Παραπομπή APA

Gupta, R. B. (1972). A textbook of machine drawing. Satya Prakashan.

Παραπομπή Chicago Style

Gupta, R B. A Textbook of Machine Drawing. New Delhi: Satya Prakashan, 1972.

Παραπομπή MLA

Gupta, R B. A Textbook of Machine Drawing. Satya Prakashan, 1972.