Hefner, R. W. The struggle for the soul of Islam: Robert W. Hefner. Understanding September 11.(2002).
Chicagoスタイル(17版)引用形式Hefner, Robert W. "The Struggle for the Soul of Islam: Robert W. Hefner." Understanding September 11.(2002) .
MLA(8版)引用形式Hefner, Robert W. "The Struggle for the Soul of Islam: Robert W. Hefner." Understanding September 11.(2002), .
警告: この引用は必ずしも正確ではありません.