Kravchuk, Olena. “Arsen Richynsky ‘Hygiene Course of Health sciences’: History of the Publication and Main Ideas”. Journal of Education, Health and Sport 10, no. 11 (November 30, 2020): 273–281. Accessed April 26, 2024. https://apcz.umk.pl/JEHS/article/view/JEHS.2020.10.11.027.