Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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