APA
Halecki, Murray, . (1954). Pius XII: Eugenio Pacelli, pope of peace. New York: Lion.
Chicago
Halecki, Murray, . 1954. Pius XII: Eugenio Pacelli, pope of peace. New York: Lion.
Harvard
Halecki, Murray, . (1954). Pius XII: Eugenio Pacelli, pope of peace. New York: Lion.
MLA
Halecki, Murray, . Pius XII: Eugenio Pacelli, pope of peace. New York: Lion. 1954.