एपीए उद्धरण

(1980). Metalworking machine tools. Washington: United States International Trade Commission.

शिकागो स्टाइल उद्धरण

Metalworking Machine Tools. Washington: United States International Trade Commission, 1980.

एमएलए उद्धरण

Metalworking Machine Tools. Washington: United States International Trade Commission, 1980.