Pacelli, Eugenio to Gasparri, Pietro from 10 June 1923, in: 'Kritische Online-Edition der Nuntiaturberichte Eugenio Pacellis (1917-1929)', document no. 16949, URL: www.pacelli-edition.de/en/Document/16949. Last access: 03-04-2025.Online since 23-07-2014, last modification 02-11-2015.