V., V. M. ., K. . OLGA S., V. . LIDIA A., B. EVGENIYA M., and V. VIKTORIYA A. “Methodology for Assessing the Quality of Educational Services in Higher Education”. The Journal of Contemporary Issues in Business and Government, vol. 27, no. 2, Apr. 2021, pp. 5121-7, https://cibgp.com/au/index.php/1323-6903/article/view/1418.