Clarke, J. I. (1977). Population geography and the developing countries. Pergamon Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रClarke, John I. Population Geography and the Developing Countries. Pergamon Press, 1977.
एमएलए (9वां संस्करण) प्रशस्ति पत्रClarke, John I. Population Geography and the Developing Countries. Pergamon Press, 1977.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.