Mirsaid Yusupov, and Suyarov Ulug’bek G’iyosiddin o’g’li. “SINGLETON PATTERNINI O‘RGANISH VA LOGGER SINFI YOZISH ”. Ta’lim Innovatsiyasi Va Integratsiyasi, vol. 59, no. 2, Dec. 2025, pp. 220-7, https://journalss.org/index.php/tal/article/view/10652.