BORSUK, O. Development of the marketing competence of heads of clubs of non-formal education institutions. ScienceRise: Pedagogical Education, [S. l.], n. 4(55), p. 4–8, 2023. DOI: 10.15587/2519-4984.2023.288883. Disponível em: https://journals.uran.ua/sr_edu/article/view/288883. Acesso em: 3 jun. 2024.