Gula, R. M. (1982). What are they saying about moral norms? Paulist Press.
Chicago Style (17. basım) AtıfGula, Richard M. What Are They Saying About Moral Norms? New York: Paulist Press, 1982.
MLA (9th ed.) AtıfGula, Richard M. What Are They Saying About Moral Norms? Paulist Press, 1982.
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