APA (7th ed.) Citation

Semple, E. C. (1947). Influences of geographic environment on the basis of Ratzel's system of anthropo-geography / by E.C. Semple. Holt.

Chicago Style (17th ed.) Citation

Semple, E. C. Influences of Geographic Environment on the Basis of Ratzel's System of Anthropo-geography / by E.C. Semple. Holt, 1947.

MLA (9th ed.) Citation

Semple, E. C. Influences of Geographic Environment on the Basis of Ratzel's System of Anthropo-geography / by E.C. Semple. Holt, 1947.

Warning: These citations may not always be 100% accurate.