Semple, E. C. (1911). Influences of geographic environment: On the basis of Ratzel's system of anthropo-geography. Constable [u.a.].
Chicago-Zitierstil (17. Ausg.)Semple, Ellen Churchill. Influences of Geographic Environment: On the Basis of Ratzel's System of Anthropo-geography. London: Constable [u.a.], 1911.
MLA-Zitierstil (9. Ausg.)Semple, Ellen Churchill. Influences of Geographic Environment: On the Basis of Ratzel's System of Anthropo-geography. Constable [u.a.], 1911.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.