Style de citation APA (7e éd.)

Gula, R. M. (1982). What are they saying about moral norms? Paulist Press.

Style de citation Chicago (17e éd.)

Gula, Richard M. What Are They Saying About Moral Norms? New York: Paulist Press, 1982.

Style de citation MLA (9e éd.)

Gula, Richard M. What Are They Saying About Moral Norms? Paulist Press, 1982.