एपीए उद्धरण

Freeman, C. (1983). Longwaves in the world economy. London: Butterworths.

शिकागो स्टाइल उद्धरण

Freeman, Christopher. Longwaves in the World Economy. London: Butterworths, 1983.

एमएलए उद्धरण

Freeman, Christopher. Longwaves in the World Economy. London: Butterworths, 1983.