एपीए उद्धरण

(1981). A stratistical review of the world industrial situation 1981. U.S.A: UNIDO.

शिकागो स्टाइल उद्धरण

A Stratistical Review of the World Industrial Situation 1981. U.S.A: UNIDO, 1981.

एमएलए उद्धरण

A Stratistical Review of the World Industrial Situation 1981. U.S.A: UNIDO, 1981.