Matthews, G. W. (2020). Philosophical Ethics. George W. Matthews.
Chicagoスタイル(17版)引用形式Matthews, George W. Philosophical Ethics. [Place of publication not identified]: George W. Matthews, 2020.
MLA(9版)引用形式Matthews, George W. Philosophical Ethics. George W. Matthews, 2020.
警告: この引用は必ずしも正確ではありません.