(1980). Essentials of Geography and development: Concepts and processes. Macmillan.
Citazione stile Chigago Style (17a edizione)Essentials of Geography and Development: Concepts and Processes. New York: Macmillan, 1980.
Citatione MLA (9a ed.)Essentials of Geography and Development: Concepts and Processes. Macmillan, 1980.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.