Pacelli, Eugenio to Gasparri, Pietro from 04 July 1919, in: 'Kritische Online-Edition der Nuntiaturberichte Eugenio Pacellis (1917-1929)', document no. 3701, URL: www.pacelli-edition.de/en/Document/3701. Last access: 03-04-2025.Online since 04-06-2012.