Pacelli, Eugenio to Gasparri, Pietro from 16 May 1920, in: 'Kritische Online-Edition der Nuntiaturberichte Eugenio Pacellis (1917-1929)', document no. 15788, URL: www.pacelli-edition.de/en/Document/15788. Last access: 23-06-2024.Online since 30-04-2013, last modification 10-09-2018.