HEINRICH HEINENING ASARLARIDA SATIRANING O’RNI. (2023). "XXI ASRDA INNOVATSION TEXNOLOGIYALAR, FAN VA TAʼLIM TARAQQIYOTIDAGI DOLZARB MUAMMOLAR" Nomli Respublika Ilmiy-Amaliy Konferensiyasi, 1(6), 75-79. https://universalpublishings.com/index.php/itfttdm/article/view/1405