CHVASAS , M.; VELIČKA , A. The organization of foreign language teaching material on the grounds of questioning system. Psichologija, [S. l.], v. 13, p. 139–144, 1973. DOI: 10.15388/Psichol.1973.13.9290. Disponível em: https://test.zurnalai.vu.lt/psichologija/article/view/9290. Acesso em: 26 oct. 2025.