URLIŃSKA, Maria Marta; KWIECIŃSKI, Zbigniew. Ryszard Borowicz (1945–2014). Rocznik Andragogiczny, [S. l.], v. 21, p. 531–536, 2015. DOI: 10.12775/6842. Disponível em: https://apcz.umk.pl/RA/article/view/6842. Acesso em: 29 cze. 2025.