एपीए उद्धरण

Helleiner, G. K. (1972). International Trade and Economic Development. Penguin Books.

शिकागो स्टाइल उद्धरण

Helleiner, G K. International Trade and Economic Development. England: Penguin Books, 1972.

एमएलए उद्धरण

Helleiner, G K. International Trade and Economic Development. Penguin Books, 1972.