KOSOWSKA-GĄSTOŁ, Beata. Are the Europarties Real Political Parties? National Parties’ Involvement in Multi-level Structures of European Political Parties. Historia i Polityka, [S. l.], n. 20 (27), p. 9 –29, 2017. DOI: 10.12775/HiP.2017.009. Disponível em: https://apcz.umk.pl/HiP/article/view/HiP.2017.009. Acesso em: 8 lip. 2025.