Caldwell, J. C. (1969). African rural-urban migration: The movenent to Ghana's towns. Columbia University.
Chicago-referens (17:e uppl.)Caldwell, John C. African Rural-urban Migration: The Movenent to Ghana's Towns. New York: Columbia University, 1969.
MLA-referens (9:e uppl.)Caldwell, John C. African Rural-urban Migration: The Movenent to Ghana's Towns. Columbia University, 1969.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.