Cita APA (7th ed.)
Gula, R. M. (1982). What are they saying about moral norms? Paulist Press.
Cita Chicago (17th ed.)
Gula, Richard M. What Are They Saying About Moral Norms? New York: Paulist Press, 1982.
Cita MLA (9th ed.)
Gula, Richard M. What Are They Saying About Moral Norms? Paulist Press, 1982.
Atenció: Aquestes cites poden no estar 100% correctes.