Butler, J. H. (1980). Economic Geography: Spatial and environmen-tal aspects of economic activity. John Wiley.
Chicago-viite (17. p.)Butler, Joseph H. Economic Geography: Spatial and Environmen-tal Aspects of Economic Activity. New York: John Wiley, 1980.
MLA-viite (9. p.)Butler, Joseph H. Economic Geography: Spatial and Environmen-tal Aspects of Economic Activity. John Wiley, 1980.
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