Isard, W. (1972). Location and space-economy: A general theory relating to industrial location, market areas, land use, trade, and urban structure. M.I.T. Press.
Chicago-referens (17:e uppl.)Isard, Walter. Location and Space-economy: A General Theory Relating to Industrial Location, Market Areas, Land Use, Trade, and Urban Structure. Cambridge, Mass.: M.I.T. Press, 1972.
MLA-referens (8:e uppl.)Isard, Walter. Location and Space-economy: A General Theory Relating to Industrial Location, Market Areas, Land Use, Trade, and Urban Structure. M.I.T. Press, 1972.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.