एपीए उद्धरण

Lewis, W. (1955). Theory of economic growth. George Allen & Unwin.

शिकागो स्टाइल उद्धरण

Lewis, W.Arthur. Theory of Economic Growth. London: George Allen & Unwin, 1955.

एमएलए उद्धरण

Lewis, W.Arthur. Theory of Economic Growth. George Allen & Unwin, 1955.