APA
"UN E. C. f. A., "UN E. C. f. A., . (1971). survey of economic conditions in Africa. : .
Chicago
"UN Economic Commission for Africa", "UN Economic Commission for Africa", . 1971. survey of economic conditions in Africa. : .
Harvard
"UN E. C. f. A., "UN E. C. f. A., . (1971). survey of economic conditions in Africa. : .
MLA
"UN Economic Commission for Africa", "UN Economic Commission for Africa", . survey of economic conditions in Africa. : . 1971.
