एपीए उद्धरण

Robson,P. (1972). International economic integration. Penguin Books Ltd.

शिकागो स्टाइल उद्धरण

Robson,P. International Economic Integration. England: Penguin Books Ltd, 1972.

एमएलए उद्धरण

Robson,P. International Economic Integration. Penguin Books Ltd, 1972.