Hartshorn, T. A., & Alexander, J. W. (2000). Economic Geography (3rd ed.). Prentice Hall of India Private Limited.
Cita Chicago (17th ed.)Hartshorn, Truman A., i John W. Alexander. Economic Geography. 3rd ed. New Delhi: Prentice Hall of India Private Limited, 2000.
Cita MLA (9th ed.)Hartshorn, Truman A., i John W. Alexander. Economic Geography. 3rd ed. Prentice Hall of India Private Limited, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.