Scott, John M., S.J. (Fall 1995), "34 Jesuits on the Moon"(PDF), Creighton University Window: 12–15{{citation}}: CS1 maint: multiple names: authors list (link).
Beeley, Philip (2024). "Mathematical Businesses: Seventeenth-Century Practitioners and their Academic Friends". Beyond the Learned Academy: The Practice of Mathematics, 1600-1850. Oxford: Oxford University Press: 294–295. doi:10.1093/oso/9780198863953.003.0011.
On Bettini, his place among the Jesuits and his relationship with Christoph Grienberger, see Gorman, Michael John (2003), "Mathematics and modesty in the Society of Jesus: The Problems of Christoph Grienberger (1564–1636)", in Feingold, Mordechai (ed.), The New Science and Jesuit Science: Seventeenth Century Perspectives, Archimedes, vol. 6, Dordrecht: Kluwer, pp. 4–7, archived from the original on March 13, 2005.
web.archive.org
On Bettini, his place among the Jesuits and his relationship with Christoph Grienberger, see Gorman, Michael John (2003), "Mathematics and modesty in the Society of Jesus: The Problems of Christoph Grienberger (1564–1636)", in Feingold, Mordechai (ed.), The New Science and Jesuit Science: Seventeenth Century Perspectives, Archimedes, vol. 6, Dordrecht: Kluwer, pp. 4–7, archived from the original on March 13, 2005.
