McDonald, W. (1910). The principles of moral science: An essay (2d ed., rev. and enl.). M.H. Gill.
Chicagoスタイル(17版)引用形式McDonald, Walter. The Principles of Moral Science: An Essay. 2d ed., rev. and enl. Dublin: M.H. Gill, 1910.
MLA(8版)引用形式McDonald, Walter. The Principles of Moral Science: An Essay. 2d ed., rev. and enl. M.H. Gill, 1910.
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