Zablocki, C. J. (1951). Pope Pius XII on World Federation. Washington, D.C..
Lua i Stíl Chicago (17ú heag.)Zablocki, Clement John. Pope Pius XII on World Federation. Washington, D.C., 1951.
Lua MLA (8ú heag.)Zablocki, Clement John. Pope Pius XII on World Federation. Washington, D.C., 1951.
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