Gaya APA

Halecki, O, &, M, J, F. (1956). Pius XII: Eugenio Pacelli, Pope of peace. . New York: New York Lion Library Editions.

Gaya MLA

Halecki, Oscar, &, Murray,, James, F.. "Pius XII: Eugenio Pacelli, Pope of peace. ". New York: New York Lion Library Editions, 1956. Buku.