Piskorz-Ryń, Agnieszka. “The Principle of Sustainable Development and Public Administration Tasks Regarding Senior Citizens from the Perspective of Administrative Law Sciences. Selected Issues”. Family Studies 22, no. 1(46) (May 24, 2021): 51–65. Accessed November 9, 2026. https://czasopisma.uksw.edu.pl/snr/article/view/8708.