1. Lixey, Kevin, Hübenthal, Christoph, Mieth, Dietmar, and Müller, Norbert (2012). Sport & Christianity. A Sign of the Times in the Light of Faith, The Catholic University of America Press.
2. Benedict XVI (2023, July 26). Message in Occasion of the Upcoming 21st Winter Olympic Games and the 10th Paralympic Winter Games. Available online: http://www.laityfamilylife.va/content/dam/laityfamilylife/Documenti/sport/eng/magisterium/BenedictXVI/MESSAGGE%20TO%20THE%20WINTER%20OLYMPIC%20AND%20PARALYMPIC%20GAMES%20IN%20VANCOUVER%2004-02-2010.pdf.
3. Castaldo, Giovanni (2020). L’Archivio della Nunziatura Apostolica in Italia. II (1939–1953). Inventario. Tomo 2, Archivio Apostolico Vaticano.
4. Cusumano, Vincenzo, and Modesti, Adolfo (2023, July 26). Available online: https://www.vcoins.com/en/stores/lac_numismatic_literature/277/product/modesti_a_cusumano_v__pio_xii_nella_medaglia_19391958_roma_1989/1795755/Default.aspx.
5. Deaflympics (2023, July 26). On the Games of 1957. Available online: http://www.deaflympics.com/games/milan-1957.