Sayfullayeva, N. F. qizi. “STATISTIKA HAQIDA TUSHUNCHA VA O‘ZBEKISTON RESPUBLIKASI BAND AHOLISINING SO‘NGGI 5 YILLIK STATISTIK TAHLILI”. Educational Research in Universal Sciences, vol. 2, no. 7 SPECIAL, Aug. 2023, pp. 79-82, http://erus.uz/index.php/er/article/view/3532.