Schug, J. A. (1987). A Padre Pio profile. St. Bede's Publications.
Lua i Stíl Chicago (17ú heag.)Schug, John A. A Padre Pio Profile. Petersham, Mass.: St. Bede's Publications, 1987.
Lua MLA (8ú heag.)Schug, John A. A Padre Pio Profile. St. Bede's Publications, 1987.
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