Cita APA (7th ed.)
Pounds, N. J. (1963). Poliyical geography. McGraw-Hill.
Cita Chicago (17th ed.)
Pounds, Norman J.G. Poliyical Geography. New York: McGraw-Hill, 1963.
Cita MLA (9th ed.)
Pounds, Norman J.G. Poliyical Geography. McGraw-Hill, 1963.
Atenció: Aquestes cites poden no estar 100% correctes.