Sears, F. W. (1964). Quantitative Geography: Techniques and Theories in Geography. Addison-Wesley.
Chicago-čujuhus (17. p.)Sears, Francis Weston. Quantitative Geography: Techniques and Theories in Geography. USA: Addison-Wesley, 1964.
MLA-čujuhus (9. p.)Sears, Francis Weston. Quantitative Geography: Techniques and Theories in Geography. Addison-Wesley, 1964.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.