Gula, R. M. (1982). What are they saying about moral norms? Paulist Press.
Chicagoスタイル(17版)引用形式Gula, Richard M. What Are They Saying About Moral Norms? New York: Paulist Press, 1982.
MLA(9版)引用形式Gula, Richard M. What Are They Saying About Moral Norms? Paulist Press, 1982.
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