Dewees, D. (1975). Economic analysis of environmental policies. Univ.of Toronto.
Lua i Stíl Chicago (17ú heag.)Dewees, D.N. Economic Analysis of Environmental Policies. Toronto: Univ.of Toronto, 1975.
Lua MLA (9ú heag.)Dewees, D.N. Economic Analysis of Environmental Policies. Univ.of Toronto, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.