Synhaivska I, Shuldyk A, Shuldyk H. Psychological factors in the formation of professionalism of principals of general secondary education institutions. PALR [Internet]. 2022 Mar. 30 [cited 2024 Apr. 25];(1):49-57. Available from: https://public.scnchub.com/palr/index.php/palr/article/view/129