Grott, Edward. “The Use of Environmental Protection by Promotion, Information and Administration in County of Świętajno”. Studia Ecologiae et Bioethicae 5, no. 1 (December 31, 2007): 445–453. Accessed July 6, 2024. https://czasopisma.uksw.edu.pl/index.php/seb/article/view/7658.