Caldwell, J. C. (1969). African rural-urban migration: The movenent to Ghana's towns. Columbia University.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCaldwell, John C. African Rural-urban Migration: The Movenent to Ghana's Towns. New York: Columbia University, 1969.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCaldwell, John C. African Rural-urban Migration: The Movenent to Ghana's Towns. Columbia University, 1969.
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