Burhon Erkinov Shuxratjon og'li Namangan muhandislik texnalogiya instituti Iqtisodiyot fakulteti 14 a 21 guruhi talabasi. “CHIQINDILARNI QAYTA ISHLASH VA ULARDAN SAMARALI FOYDALANISH”. SCIENCE AND INNOVATION IDEAS IN MODERN EDUCATION, vol. 2, no. 2, Feb. 2024, pp. 218-25, http://woconferences.com/index.php/SIIME/article/view/1252.