National Research Council. Ad Hoc Committee on Geography. (1965). The science of geography: Report. National Academy of Sciences-National Research Council.
Chicago-referens (17:e uppl.)National Research Council. Ad Hoc Committee on Geography. The Science of Geography: Report. Washington: National Academy of Sciences-National Research Council, 1965.
MLA-referens (9:e uppl.)National Research Council. Ad Hoc Committee on Geography. The Science of Geography: Report. National Academy of Sciences-National Research Council, 1965.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.