Pacelli, Eugenio to Gasparri, Pietro from 15 February 1919, in: 'Kritische Online-Edition der Nuntiaturberichte Eugenio Pacellis (1917-1929)', document no. 11863, URL: www.pacelli-edition.de/en/Document/11863. Last access: 03-04-2025.Online since 25-03-2013, last modification 10-09-2018.