(2001). The American Geographical Society's focus on geography. Published by the Society in cooperation with the Dept. of Geography, University of Kentucky.
Chicago-referens (17:e uppl.)The American Geographical Society's Focus on Geography. New York: Published by the Society in cooperation with the Dept. of Geography, University of Kentucky, 2001.
MLA-referens (9:e uppl.)The American Geographical Society's Focus on Geography. Published by the Society in cooperation with the Dept. of Geography, University of Kentucky, 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.