Kholostenko T. Levels of Organizational-Pedagogical Conditions of Professional Self-Improvement of the Head of Out-Of-School Educational Establishment (by the Example of the Head of Children’s Sports School). PD [Internet]. 2012Mar.6 [cited 2024Apr.19];0(11):324-30. Available from: https://ojs.kgpa.km.ua/index.php/peddiscourse/article/view/902