Gupta, R. B. (1972). A textbook of machine drawing. Satya Prakashan.
Dyfyniad Arddull ChicagoGupta, R B. A Textbook of Machine Drawing. New Delhi: Satya Prakashan, 1972.
Dyfyniad MLAGupta, R B. A Textbook of Machine Drawing. Satya Prakashan, 1972.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.