Cita APA (7a ed.)

Ratzel, F. (1891). Anthropogeographie (2a. ed.). Stuttgart.

Cita Chicago Style (17a ed.)

Ratzel, Friedrich. Anthropogeographie. 2a. ed. Stuttgart: Stuttgart, 1891.

Cita MLA (9a ed.)

Ratzel, Friedrich. Anthropogeographie. 2a. ed. Stuttgart, 1891.