Forbes, D. (1985). Geography of underdevelopment: A critical survey. Select Book Service Syndicate.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रForbes, D.K. Geography of Underdevelopment: A Critical Survey. Select Book Service Syndicate, 1985.
एमएलए (9वां संस्करण) प्रशस्ति पत्रForbes, D.K. Geography of Underdevelopment: A Critical Survey. Select Book Service Syndicate, 1985.
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