Kowalska JE, Kowalewski M. Self-assessment of the competences of early childhood education teachers to conduct lessons of physical activities. J Educ Health Sport [Internet]. 2020 Jul. 30 [cited 2024 Nov. 26];10(8):62-71. Available from: https://apcz.umk.pl/JEHS/article/view/JEHS.2020.10.08.007