Saida Ganijonovna Hasanova. “ABROAD STUDY ABOUT THE PROBLEM OF CONCERN IN PRESCHOOL CHILDREN”. Frontline Social Sciences and History Journal 2, no. 02 (February 28, 2022): 60–65. Accessed October 5, 2025. https://frontlinejournals.org/journals/index.php/fsshj/article/view/145.