(2001). The American Geographical Society's focus on geography. Published by the Society in cooperation with the Dept. of Geography, University of Kentucky.
Chicago-viite (17. p.)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-viite (9. p.)The American Geographical Society's Focus on Geography. Published by the Society in cooperation with the Dept. of Geography, University of Kentucky, 2001.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.