ВЕЛИЕВА СУСАННА; АЛИЕВ ФАЙОЗ. ОСНОВЫ ОРГАНИЗАЦИИ СТАТИСТИЧЕСКИХ НАБЛЮДЕНИЙ. Journal of Academic Research and Trends in Educational Sciences, [S. l.], p. 126–133, 2022. Disponível em: http://ijournal.uz/index.php/jartes/article/view/422. Acesso em: 7 may. 2024.