篇号：1
题名：The Market as a Factor in the Localization of Industry in the United States
作者：Chauncy D. Harris
期刊全称或缩写：Annals of the Association of American Geographers
年份，卷（期），起止页码：Vol. 44, No. 4 (Dec., 1954), pp. 315-348
电子链接：http://www.jstor.org/pss/2561395
篇号：2
题名：Thunen at Two Hundred
作者：Paul A. Samuelson
期刊全称或缩写：Journal of Economic Literature
年份，卷（期），起止页码：Vol. 21, No. 4 (Dec., 1983), pp. 1468-1488
电子链接：http://www.jstor.org/pss/2725147