Hayes, P. (1936). Pope Pius XI. National Council of Catholic Men.
Chicago Style (17th ed.) CitationHayes, Patrick. Pope Pius XI. Washington, D.C.: National Council of Catholic Men, 1936.
MLA (8th ed.) CitationHayes, Patrick. Pope Pius XI. National Council of Catholic Men, 1936.
Warning: These citations may not always be 100% accurate.