Roepke, H. G. (1967). Readings in economic geography. John Wiley.
Cita Chicago (17th ed.)Roepke, Howerd G. Readings in Economic Geography. New York: John Wiley, 1967.
Cita MLA (9th ed.)Roepke, Howerd G. Readings in Economic Geography. John Wiley, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.