Ratajek-Gruda, Monika, Marta Grzejszczak, and Anna Janas-Naze. “Trudności Diagnostyczne Nieleczonej Torbieli Zastoinowej Wargi górnej = Diagnostic Difficulties of Not Treated Congestive Cyst of the Upper Lip”. Journal of Education, Health and Sport 6, no. 12 (December 22, 2016): 604–613. Accessed January 9, 2025. https://apcz.umk.pl/JEHS/article/view/4105.