Teshaboyeva Nafisa Zubaydulla qizi, and Atajanova Mohinur Sanjar qizi. 2023. “CONVERSION AND ITS ORIGIN”. "XXI ASRDA INNOVATSION TEXNOLOGIYALAR, FAN VA TAʼLIM TARAQQIYOTIDAGI DOLZARB MUAMMOLAR" Nomli Respublika Ilmiy-Amaliy Konferensiyasi 1 (11):118-23. https://universalpublishings.com/index.php/itfttdm/article/view/2660.