Zablocki, C. J. (1951). Pope Pius XII on world federation. United States G.P.O..
Chicago Style aipamenaZablocki, Clement John. Pope Pius XII on World Federation. Washington: United States G.P.O., 1951.
MLA aipamenaZablocki, Clement John. Pope Pius XII on World Federation. United States G.P.O., 1951.
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