AKADEMIK LITSEY O‘QUVCHILARINI MATEMATIKA FANIDAN MILLIY SERTIFIKAT IMTIHONLARIGA TAYYORLASHDA IDC KITOBLARINING SAMARALARI. journal. 2026;95(2):493-499. Accessed August 1, 2026. https://alpharesearchs.com/index.php/obr/article/view/2444