Wolfram, S. (1989). Philosophical logic: An introduction. Routledge.
Chicagoスタイル(17版)引用形式Wolfram, Sybil. Philosophical Logic: An Introduction. London: Routledge, 1989.
MLA(9版)引用形式Wolfram, Sybil. Philosophical Logic: An Introduction. Routledge, 1989.
警告: この引用は必ずしも正確ではありません.