ВАРХОВ, Г. В. EUROPEAN PARLIAMENT’S POLITICAL PARTIES FAMILY: PRINCIPLES OF OPERATION AND IDEOLOGICAL SPECIFICS. PRECARPATHIAN BULLETIN OF THE SHEVCHENKO SCIENTIFIC SOCIETY Idea, [S. l.], n. 3(23), p. 41–48, 2019. Disponível em: https://pvntsh.nung.edu.ua/index.php/idea/article/view/646. Acesso em: 11 dec. 2025.