APA
Semple E. C., Constable (1795-1999) & Henry Holt and Company. (1911). Influences of geographic environment on the basis of Ratzel's system of anthropo-geography. London: Constable & Company Ltd.
Chicago
Semple Ellen Churchill, Constable (1795-1999) and Henry Holt and Company. 1911. Influences of geographic environment on the basis of Ratzel's system of anthropo-geography. London: Constable & Company Ltd.
Harvard
Semple E. C., Constable (1795-1999) and Henry Holt and Company. (1911). Influences of geographic environment on the basis of Ratzel's system of anthropo-geography. London: Constable & Company Ltd.
MLA
Semple Ellen Churchill, Constable (1795-1999) and Henry Holt and Company. Influences of geographic environment on the basis of Ratzel's system of anthropo-geography. London: Constable & Company Ltd. 1911.