एपीए उद्धरण

Polak, J. J. (1954). An international economic system. London: George Allen & Unwin, Ltd.

शिकागो स्टाइल उद्धरण

Polak, J. J. An International Economic System. London: George Allen & Unwin, Ltd, 1954.

एमएलए उद्धरण

Polak, J. J. An International Economic System. London: George Allen & Unwin, Ltd, 1954.