Rybeczka-Gacek, Anna, Jerzy Piwkowski, and Bożena Muszyńska. “Długopole - The History of a Spa”. Medicina Internacia Revuo, no. 103 (December 31, 2014): 126-132. Accessed April 25, 2024. https://interrev.com/mir/index.php/mir/article/view/62.