R.A.Nasimov. “AXBOROTLASHTIRISH TIZIMIDA SOLIQ YUKINI OPTIMALLASHTIRISH VA TAKOMILLASHTIRISH YO‘LLARI”. Ustozlar uchun 16, no. 1 (March 24, 2023): 41–47. Accessed September 19, 2024. http://pedagoglar.uz/index.php/01/article/view/3397.