Pacelli, Eugenio to Gasparri, Pietro from 24 June 1925, in: 'Kritische Online-Edition der Nuntiaturberichte Eugenio Pacellis (1917-1929)', document no. 18977, URL: www.pacelli-edition.de/en/Document/18977. Last access: 03-04-2025.Online since 24-06-2016.