Epistola A. R. P. N. Wlodimiri Ledóchowski ad Patres et Fratres Societatis Iesu : declarationes in quosdam canones attingentes praescripta Instituti - Ledóchowski, Wlodimiro (S.I.) 1866-1942 (Eugenius Subirana, Pontificius Editor, 1918)