HUMENIUK, Iryna; HUMENIUK, Mykhailo. The Criterion and Level Aspect of the Experimental Research into the Effectiveness of the Methodical System of Teaching Ukrainian Language for Professional Purposes. Journal of Vasyl Stefanyk Precarpathian National University, [S. l.], v. 11, n. 1, p. 138–146, 2024. DOI: 10.15330/jpnu.11.1.138-146. Disponível em: http://pu.if.ua/index.php/jpnu/article/view/7845. Acesso em: 3 jul. 2024.