Wydrych, Bartosz, et al. “Analysis of the Knowledge Regarding As Well As the Ability to Provide First Aid by Teachers of Secondary Schools in the Świętokrzyskie Voivodeship”. Journal of Education, Health and Sport, vol. 9, no. 4, Apr. 2019, pp. 423-34, https://apcz.umk.pl/JEHS/article/view/6839.