Gaya APA

XXIII, J. (1961). Mater et Magistra, christianity and social progress, an encyclical letter. Ed. by D.R. Campion S.J.and E.K.Culhane S.J. . New York: The America Press.

Gaya MLA

XXIII, Joannes. "Mater et Magistra, christianity and social progress, an encyclical letter. Ed. by D.R. Campion S.J.and E.K.Culhane S.J. ". New York: The America Press, 1961. Buku.