Não informado. (1911). Annals of the Association of American Geographers. Association of American Geographers.
Citação do estilo Chicago (17ª ed.)Não informado. Annals of the Association of American Geographers. Washington: Association of American Geographers, 1911.
Citação MLA (8ª ed.)Não informado. Annals of the Association of American Geographers. Association of American Geographers, 1911.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.