JASKUŁA, R. Profesor Ryszard Ergetowski (1925–2005). AUPC Studia ad Bibliothecarum Scientiam Pertinentia, [S. l.], v. 3, p. 351–354, 2005. Disponível em: https://sbsp.uken.krakow.pl/article/view/1010. Acesso em: 27 kwi. 2024.