Diwakar Rao, P. L. (1989). Foundry engineering handbook. Utility.
Dyfyniad Arddull ChicagoDiwakar Rao, P L. Foundry Engineering Handbook. Secunderabad: Utility, 1989.
Dyfyniad MLADiwakar Rao, P L. Foundry Engineering Handbook. Utility, 1989.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.