KAŠYS, J. System of teenager summer work and rest organization. Psichologija, [S. l.], v. 9, n. 1, p. 59–68, 1968. DOI: 10.15388/Psichol.1968.9.8919. Disponível em: https://www.journals.vu.lt/psichologija/article/view/8919.. Acesso em: 5 may. 2024.