Hoy, D. R. (1978). Essentials of geography and development: Concepts and processes. Macmillan.
Citazione stile Chigago Style (17a edizione)Hoy, Don R. Essentials of Geography and Development: Concepts and Processes. New York: Macmillan, 1978.
Citatione MLA (9a ed.)Hoy, Don R. Essentials of Geography and Development: Concepts and Processes. Macmillan, 1978.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.