Sears, F. W. (1964). Quantitative Geography: Techniques and Theories in Geography. Addison-Wesley.
Citazione stile Chigago Style (17a edizione)Sears, Francis Weston. Quantitative Geography: Techniques and Theories in Geography. USA: Addison-Wesley, 1964.
Citatione MLA (9a ed.)Sears, Francis Weston. Quantitative Geography: Techniques and Theories in Geography. Addison-Wesley, 1964.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.