Kegley, C. W. (1978). Introduction to logic. Charles E. Mrrill.
Chicagoスタイル(17版)引用形式Kegley, Charles W. Introduction to Logic. London: Charles E. Mrrill, 1978.
MLA(9版)引用形式Kegley, Charles W. Introduction to Logic. Charles E. Mrrill, 1978.
警告: この引用は必ずしも正確ではありません.