O’zbekiston Respublikasida amal qiladigan chet tili darajasini aniqlash imtihonlari va sertifikatlari. JUSR [Internet]. 2023 Jul. 1 [cited 2024 Nov. 23];1(6):996-9. Available from: https://universalpublishings.com/index.php/jusr/article/view/1463