Akhmetshin, Airat, and Ulfat Zinnurov. “Viability Assessment of Supplementary Vocational Education Institutions Based on Staff Satisfaction Analysis”. Amazonia Investiga 10, no. 40 (May 31, 2021): 84-92. Accessed April 26, 2024. https://amazoniainvestiga.info/index.php/amazonia/article/view/1600.