ДРАЗДАУСКАС, А. Copulas, Auxiliaries and Notional Verbs. Kalbotyra, [S. l.], v. 27, n. 3, p. 25–30, 1976. DOI: 10.15388/Knygotyra.1976.21802. Disponível em: https://test.zurnalai.vu.lt/kalbotyra/article/view/21802. Acesso em: 26 oct. 2025.