एपीए उद्धरण

Das, K. (1970). Foreign trade and foreign exchange. progressive publishers.

शिकागो स्टाइल उद्धरण

Das, K.K. Foreign Trade and Foreign Exchange. Culcatta: progressive publishers, 1970.

एमएलए उद्धरण

Das, K.K. Foreign Trade and Foreign Exchange. progressive publishers, 1970.