Dyfyniad APA

(1920). Journal of institution of engineers (India): Mining and metallurgy engineering division. Institution of engineers.

Dyfyniad Arddull Chicago

Journal of Institution of Engineers (India): Mining and Metallurgy Engineering Division. New Delhi: Institution of engineers, 1920.

Dyfyniad MLA

Journal of Institution of Engineers (India): Mining and Metallurgy Engineering Division. Institution of engineers, 1920.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.