“BOSHLANG’ICH SINF O’QUVCHILARI UCHUN STEAM YONDASHUVINING NAZARIY ASOSLARINI TEST TUZISH AMALIYOTI BILAN BOG’LASH”. 2026. Journal of Universal Science Research 4 (2): 249-53. https://universalpublishings.com/~niverta1/index.php/jusr/article/view/17038.