Ramsay, F. J. (1999). Africa (8th ed.). London: McGraw-Hill.
Trích dẫn kiểu ChicagoRamsay, F. Jeffress. Africa. 8th ed. London: McGraw-Hill, 1999.
Deismireacht MLARamsay, F. Jeffress. Africa. 8th ed. London: McGraw-Hill, 1999.
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