Siddikova Shahnoza Axmedovna, Axmadjonova Y o rqinoy Tojimurodovna, and Y a xshieva Zuxra Ziyatovna. 2021. “PISA A CRITERIA FOR IMPROVING THE QUALITY OF EDUCATION”. Galaxy International Interdisciplinary Research Journal 9 (05):306-8. https://doi.org/10.17605/OSF.IO/Y2XKJ.