Cita APA

Pounds, N. J. G. (1972). Political geography (2. ed.). New York: McGraw-Hill.

Citación estilo Chicago

Pounds, Norman J. G. Political Geography. 2. ed. New York: McGraw-Hill, 1972.

Cita MLA

Pounds, Norman J. G. Political Geography. 2. ed. New York: McGraw-Hill, 1972.