1. Effects of Air Quality Regulations on Polluting Industries
2. Canoe News Website2003, 'Federal election summaries 1972-1993,' accessed 14 March 2003. http://www.canoe.ca/CNEWSFedElections/fed_elxn_1972-html
3. The Politics of the Environment
4. Margaret Chase, 2003, 'Do Canadians vote for clean air? Air quality and election outcomes 1974-1996,' M.A. research project , Department of Economics, University of Guelph