Não informado. (1902). Journal of Geography. National Council for Geographic Education.
Chicago-referens (17:e uppl.)Não informado. Journal of Geography. Indiana, Pa: National Council for Geographic Education, 1902.
MLA-referens (8:e uppl.)Não informado. Journal of Geography. National Council for Geographic Education, 1902.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.