Dewees, D. (1975). Economic analysis of environmental policies. Univ.of Toronto.
Chicago-čujuhus (17. p.)Dewees, D.N. Economic Analysis of Environmental Policies. Toronto: Univ.of Toronto, 1975.
MLA-čujuhus (9. p.)Dewees, D.N. Economic Analysis of Environmental Policies. Univ.of Toronto, 1975.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.