APA (7th ed.) Citation

Pius, P. C. C. P. (1931). Concerning "Catholic Action": The conflict in Italy. Washington, D.C..

Chicago Style (17th ed.) Citation

Pius, Pope; Catholic Church. Pope. Concerning "Catholic Action": The Conflict in Italy. Washington, D.C., 1931.

MLA (8th ed.) Citation

Pius, Pope; Catholic Church. Pope. Concerning "Catholic Action": The Conflict in Italy. Washington, D.C., 1931.

Warning: These citations may not always be 100% accurate.