Cita APA (7a ed.)

Weigert, H. W., Brodie, H., & Doherty, E. (1957). Principles of political geography. Appleton-Century.

Cita Chicago Style (17a ed.)

Weigert, Hans W., Henry Brodie, y Edward.W Doherty. Principles of Political Geography. New York: Appleton-Century, 1957.

Cita MLA (8a ed.)

Weigert, Hans W., et al. Principles of Political Geography. Appleton-Century, 1957.