National Research Council. Ad Hoc Committee on Geography. (1965). The science of geography: Report. National Academy of Sciences-National Research Council.
Citazione stile Chigago Style (17a edizione)National Research Council. Ad Hoc Committee on Geography. The Science of Geography: Report. Washington: National Academy of Sciences-National Research Council, 1965.
Citatione MLA (9a ed.)National Research Council. Ad Hoc Committee on Geography. The Science of Geography: Report. National Academy of Sciences-National Research Council, 1965.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.