МАНДРИК, Я. І. STAFFING OIL AND GAS COMPLEX OF UKRAINE. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY Idea, [S. l.], n. 3(19), p. 80–89, 2019. Disponível em: https://www.pvntsh.nung.edu.ua/index.php/idea/article/view/682. Acesso em: 17 dec. 2025.