The summer recreation system for children in the 1950s–1960s. Вестник государственного и муниципального управления, [S. l.], v. 13, n. 2, p. 102–112, 2024. Disponível em: https://vestnik-gmu.owebs.ru/article/view/18329. Acesso em: 28 sep. 2026.