Meeting of the International Geographical Union's Working Group on the Geography of Tourism and Recreation Trent University & International Geographical Union Working Group. (1975). Tourism as a factor in national and regional development [1 to 8] 1974: Proceedings of a meeting of the international Geographical Union's Working Group on the Geography of Tourism and Recreation, September, 1974. Dept. of Geography, Trent University.
Lua i Stíl Chicago (17ú heag.)Meeting of the International Geographical Union's Working Group on the Geography of Tourism and Recreation Trent University agus International Geographical Union Working Group. Tourism as a Factor in National and Regional Development [1 to 8] 1974: Proceedings of a Meeting of the International Geographical Union's Working Group on the Geography of Tourism and Recreation, September, 1974. Peterborough, Ont: Dept. of Geography, Trent University, 1975.
Lua MLA (9ú heag.)Meeting of the International Geographical Union's Working Group on the Geography of Tourism and Recreation Trent University agus International Geographical Union Working Group. Tourism as a Factor in National and Regional Development [1 to 8] 1974: Proceedings of a Meeting of the International Geographical Union's Working Group on the Geography of Tourism and Recreation, September, 1974. Dept. of Geography, Trent University, 1975.