Aleksandrowicz , Jerzy. «“…He was the one who was creating opportunities for critical thinking…” . 138». в Meetings: Roman Ingarden in Recollections, под редакцией Leszek Sosnowski. Poland: Księgarnia Akademicka Publishing, 2020. просмотрено ноябрь 5, 2026. https://books.akademicka.pl/publishing/catalog/book/104/chapter/1448.