एपीए उद्धरण

National Productivity Council. (1961). Foundry industry in Sweden USA and Japan. National productivity council.

शिकागो स्टाइल उद्धरण

National Productivity Council. Foundry Industry in Sweden USA and Japan. New Delhi: National productivity council, 1961.

एमएलए उद्धरण

National Productivity Council. Foundry Industry in Sweden USA and Japan. National productivity council, 1961.