Pacelli, Eugenio to Tedeschini, Federico from 23 October 1920, in: 'Kritische Online-Edition der Nuntiaturberichte Eugenio Pacellis (1917-1929)', document no. 11920, URL: www.pacelli-edition.de/en/Document/11920. Last access: 03-04-2025.Online since 25-03-2013, last modification 10-09-2018.