(1980). Essentials of Geography and development: Concepts and processes. Macmillan.
Cita Chicago (17th ed.)Essentials of Geography and Development: Concepts and Processes. New York: Macmillan, 1980.
Cita MLA (9th ed.)Essentials of Geography and Development: Concepts and Processes. Macmillan, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.