American Association of Geographers. (1943). Professional Geographer. Association of American Geographers.
Čikaški stil citiranja (17. izdanje)American Association of Geographers. Professional Geographer. Washington: Association of American Geographers, 1943.
MLA način citiranja (8. izdanje)American Association of Geographers. Professional Geographer. Association of American Geographers, 1943.
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