Gocko, Jerzy Eugeniusz, and Paweł Centnar. “Spiritual Direction in the Life of St. John Bosco”. Seminare. Learned Investigations 36, no. 1 (December 22, 2022): 67–78. Accessed May 19, 2024. https://czasopisma.uksw.edu.pl/index.php/s/article/view/11002.