Korzeniowska, Anna, Gabriela Ręka, and Halina Piecewicz-Szczęsna. “The Knowledge of Mothers in Poland on Measles and Its Prevention - a Survey Study”. Journal of Education, Health and Sport 10, no. 7 (July 18, 2020): 105–118. Accessed April 19, 2024. https://apcz.umk.pl/JEHS/article/view/JEHS.2020.10.07.011.