Willis, J. R. (1979). Studies in West African Islamic history: Volume 1. The cultivators of Islam. F. Cass.
Chicagoスタイル(17版)引用形式Willis, John Ralph. Studies in West African Islamic History: Volume 1. The Cultivators of Islam. London: F. Cass, 1979.
MLA(8版)引用形式Willis, John Ralph. Studies in West African Islamic History: Volume 1. The Cultivators of Islam. F. Cass, 1979.
警告: この引用は必ずしも正確ではありません.