Заїка, Євген Валентинович. 2017. “FEATURES OF SCHOOLCHILDREN MAKING A «GROUP-LEADER» IN THE OF DEVELOPING EDUCATION CLASSES”. The Journal of V. N. Karazin Kharkiv National University. A Series of «Psychology», no. 62 (October), 53-56. https://periodicals.karazin.ua/psychology/article/view/9413.