Garrison, W. L. (1967). Quantitative geography. Dept. of Geography of Northwestern University.
Citazione stile Chigago Style (17a edizione)Garrison, William Louis. Quantitative Geography. Evanston: Dept. of Geography of Northwestern University, 1967.
Citatione MLA (9a ed.)Garrison, William Louis. Quantitative Geography. Dept. of Geography of Northwestern University, 1967.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.