Não informado. (1967). Ontario Geography. University of Western Ontario, Department of Geography.
Chicago-referens (17:e uppl.)Não informado. Ontario Geography. Ontario, Canada: University of Western Ontario, Department of Geography, 1967.
MLA-referens (8:e uppl.)Não informado. Ontario Geography. University of Western Ontario, Department of Geography, 1967.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.