Cita APA

Semple, E. C. (1968). Influences of geographic environment on the basis of ratzel s system of anthropo-geography. New York: Russell & Russell.

Citación estilo Chicago

Semple, Ellen Churchill. Influences of Geographic Environment On the Basis of Ratzel S System of Anthropo-geography. New York: Russell & Russell, 1968.

Cita MLA

Semple, Ellen Churchill. Influences of Geographic Environment On the Basis of Ratzel S System of Anthropo-geography. New York: Russell & Russell, 1968.