Semple, E. C., & Ratzel, F. (1911). Influences of geographic environment, on the basis of Ratzel's system of anthropo-geography. H. Holt ; Constable.
芝加哥风格引文Semple, Ellen Churchill, 与 Friedrich Ratzel. Influences of Geographic Environment, on the Basis of Ratzel's System of Anthropo-geography. New York : London: H. Holt ; Constable, 1911.
MLA引文Semple, Ellen Churchill, 与 Friedrich Ratzel. Influences of Geographic Environment, on the Basis of Ratzel's System of Anthropo-geography. H. Holt ; Constable, 1911.
警告：这些引文格式不一定是100％准确.