Briefe an Roman Ingarden : 1917-1938 / Edith Stein ; Einleitung von Hanna-Barbara Gerl ; Anmerkungen von Maria Amata Neyer O.C.D. - Theresia Benedicta a Cruce, s., 1891-1942. (OLS)http://pul/name/8163; Neyer, Maria Amata, suora, 1922- (OLS)http://pul/name/37196; Gerl, Hanna-Barbara. (OLS)http://pul/name/37195; Ingarden, Roman, 1893-1970 Lettere (Ingarden, Roman, 1893-1878). (OLS)http://pul/name/37197 (Herder, 1991)
Bibliografia in nota.