Hoy, D. R., & Ed. by Hoy . Don R. (1985). Essentials of geography and development: Concepts and processes (2nd ed.). Charles B. Merrill.
Chicago-viite (17. p.)Hoy, Don R., ja Ed. by Hoy . Don R. Essentials of Geography and Development: Concepts and Processes. 2nd ed. Columbus, Ohio: Charles B. Merrill, 1985.
MLA-viite (9. p.)Hoy, Don R., ja Ed. by Hoy . Don R. Essentials of Geography and Development: Concepts and Processes. 2nd ed. Charles B. Merrill, 1985.
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