Huff, D. L. (1964). Defining and estimating a trading area. California, LA: Real Estate Research Program. Division of Research. Graduate School of Business Administration. University of California, Los Angeles.
Παραπομπή Chicago StyleHuff, David L. Defining and Estimating a Trading Area. California, LA: Real Estate Research Program. Division of Research. Graduate School of Business Administration. University of California, Los Angeles, 1964.
Παραπομπή MLAHuff, David L. Defining and Estimating a Trading Area. California, LA: Real Estate Research Program. Division of Research. Graduate School of Business Administration. University of California, Los Angeles, 1964.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.