Рыбалко, В. С. “Psychological and Pedagogical Conditions for the Formation of Theoretical Thinking in Junior Schoolchildren According to the System of Developmental Education D. B. Elkonina-V. V. Davydova”. Educational Dimension 32 (November 25, 2011): 492–496. Accessed May 21, 2024. https://journal.kdpu.edu.ua/ped/article/view/4622.