Gaya APA

Biffi, G, (. (1989). John Paul II: a panorama of his teachings. Preface by Joseph Card. Bernardin. . New York: new City Press.

Gaya MLA

Biffi, G., (dll.). "John Paul II: a panorama of his teachings. Preface by Joseph Card. Bernardin. ". New York: new City Press, 1989. Buku.