Leff, G. (1969). History and social theory. University of Alabama Press.
Chicagoスタイル(17版)引用形式Leff, Gordon. History and Social Theory. University, Ala: University of Alabama Press, 1969.
MLA(9版)引用形式Leff, Gordon. History and Social Theory. University of Alabama Press, 1969.
警告: この引用は必ずしも正確ではありません.