Davidson, B. (1973). African kingdoms. Time-Life International.
Chicagoスタイル(17版)引用形式Davidson, Basil. African Kingdoms. Nederland, BV: Time-Life International, 1973.
MLA(9版)引用形式Davidson, Basil. African Kingdoms. Time-Life International, 1973.
警告: この引用は必ずしも正確ではありません.