Duff, L. (1997). The economics of governments and markets: New directions in European public policy. Longman.
Chicago-referens (17:e uppl.)Duff, Lois. The Economics of Governments and Markets: New Directions in European Public Policy. London: Longman, 1997.
MLA-referens (9:e uppl.)Duff, Lois. The Economics of Governments and Markets: New Directions in European Public Policy. Longman, 1997.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.