1. Resource Paper No. 5;Saarinen Thomas F,1969
2. A LOCATION THEORY FOR RURAL SETTLEMENT
3. Bertrand, Alvin. 1958.Rural Sociology, 28New York: McGraw-Hill Book Company. Woods, Sister Francis Jerome,The American Family System, Harper Bros., New York, 1959, pp. 160–166. or Locke, Harvey, “Contemporary American Farm Families,”Rural Sociology, Vol. 10, 1945, pp. 142–151
4. Rapoport, Amos. 1969.House Form and Culture, 46–83. New York: Prentice-Hall. esp.