Gaya APA

Wojtyla, K, (, J, P, I. (2001). Ars caritatis: the thirtieth anniversary of the foundation of the pontifical council " Cor Unum" 1971-200" . Vatican: Vatican City.

Gaya MLA

Wojtyla, Karol, (Pope, John, Paul, II). "Ars caritatis: the thirtieth anniversary of the foundation of the pontifical council " Cor Unum" 1971-200"". Vatican: Vatican City, 2001. Text.