Hoy, D. R. (1978). Essentials of geography and development: Concepts and processes. Macmillan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHoy, Don R. Essentials of Geography and Development: Concepts and Processes. New York: Macmillan, 1978.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHoy, Don R. Essentials of Geography and Development: Concepts and Processes. Macmillan, 1978.
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