Xaydarov Mavlonjon, Bozorboyev Shohruxbek, Qodirov Paxlovonjon, and Ma'rufjonov Javohirbek. “TUPROQDAGI SUVNING TARKIBI VA HARAKATI”. Ta’lim Innovatsiyasi Va Integratsiyasi, vol. 11, no. 2, Dec. 2023, pp. 185-8, https://web-journal.ru/ilmiy/article/view/1964.