Duff, L. (1997). The economics of governments and markets: New directions in European public policy. Longman.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDuff, Lois. The Economics of Governments and Markets: New Directions in European Public Policy. London: Longman, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDuff, Lois. The Economics of Governments and Markets: New Directions in European Public Policy. Longman, 1997.
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