Gaya APA

II, J, P. (1994). Letter to families from Pope John Paul II. . Libreria Editrice Vaticana: Libreria Editrice Vaticana Vatican.

Gaya MLA

II, Joannes, Paulus. "Letter to families from Pope John Paul II. ". Libreria Editrice Vaticana: Libreria Editrice Vaticana Vatican, 1994. Buku.