Não informado. (1872). Journal of the American Geographical Society. American Geographical Society.
Chicago-referens (17:e uppl.)Não informado. Journal of the American Geographical Society. New York: American Geographical Society, 1872.
MLA-referens (8:e uppl.)Não informado. Journal of the American Geographical Society. American Geographical Society, 1872.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.