एपीए उद्धरण

Lewis, W. A. (1956). Theory of Economic Growth. Allen & Unwin.

शिकागो स्टाइल उद्धरण

Lewis, W Arthur. Theory of Economic Growth. London: Allen & Unwin, 1956.

एमएलए उद्धरण

Lewis, W Arthur. Theory of Economic Growth. Allen & Unwin, 1956.