Treacy, G. C. (1952). Pius X: Pope of the children. Paulist Press.
Lua i Stíl Chicago (17ú heag.)Treacy, Gerald C. Pius X: Pope of the Children. New York: Paulist Press, 1952.
Lua MLA (8ú heag.)Treacy, Gerald C. Pius X: Pope of the Children. Paulist Press, 1952.
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