एपीए उद्धरण

National productivity council. (1964). Materials handling in West Germany Britain and USA. National productivity council.

शिकागो स्टाइल उद्धरण

National productivity council. Materials Handling in West Germany Britain and USA. New Delhi: National productivity council, 1964.

एमएलए उद्धरण

National productivity council. Materials Handling in West Germany Britain and USA. National productivity council, 1964.