Oliver, R. (1975). Africa in the iron age. Cambridge University Press.
Chicagoスタイル(17版)引用形式Oliver, Ronald. Africa in the Iron Age. New York: Cambridge University Press, 1975.
MLA(9版)引用形式Oliver, Ronald. Africa in the Iron Age. Cambridge University Press, 1975.
警告: この引用は必ずしも正確ではありません.