KOLODZIEJCZYK-OLCZAK, Izabela. Training institutions as an agent in the market of educational services for older people – chosen aspects in the context of empirical research. Acta Universitatis Lodziensis. Folia Oeconomica, Poland, v. 2, n. 312, 2016. Disponível em: https://www.czasopisma.uni.lodz.pl/foe/article/view/378. Acesso em: 8 aug. 2026.