APA način citiranja (7. izdanje)

Pius, P. C. C. P. (1939). Summi Pontificatus, The First Encyclical of Pope Pius XII on the Need For Unity in Society. S.l..

Čikaški stil citiranja (17. izdanje)

Pius, Pope; Catholic Church. Pope. Summi Pontificatus, The First Encyclical of Pope Pius XII on the Need For Unity in Society. S.l., 1939.

MLA način citiranja (8. izdanje)

Pius, Pope; Catholic Church. Pope. Summi Pontificatus, The First Encyclical of Pope Pius XII on the Need For Unity in Society. S.l., 1939.