एपीए उद्धरण

Diwakar Rao, P. L. (1989). Foundry engineering handbook. Utility.

शिकागो स्टाइल उद्धरण

Diwakar Rao, P L. Foundry Engineering Handbook. Secunderabad: Utility, 1989.

एमएलए उद्धरण

Diwakar Rao, P L. Foundry Engineering Handbook. Utility, 1989.