SVYSTUN, Valentyna. General scientific principles of management activity of heads in vocational education system. Professional Pedagogics, Kyiv, n. 1, p. 68–75, 2011. DOI: 10.32835/2223-5752.2011.1.68-75. Disponível em: https://jrnls.ivet.edu.ua/1/article/view/464. Acesso em: 10 jul. 2026.