Gasparri, Pietro to Pacelli, Eugenio from 09 June 1917, in: 'Kritische Online-Edition der Nuntiaturberichte Eugenio Pacellis (1917-1929)', document no. 1509, URL: www.pacelli-edition.de/en/Document/1509. Last access: 16-07-2024.Online since 20-12-2011.