VITKUS, Gediminas. Distinguishing Features of lnternational Political lntegration Theories. Politologija, [S. l.], v. 3, n. 3-4, p. 19–36, 1993. DOI: 10.15388/Polit.1993.3.3. Disponível em: https://test.zurnalai.vu.lt/politologija/article/view/42021. Acesso em: 25 oct. 2025.