Круцевич, Тетяна, and Оксана Марченко. “Peculiarities of the Influence of Psychological Characteristics of Boys and Girls of Different Age Groups on the Formation of the Need for Achieving Success”. Slobozhanskyi Herald of Science and Sport, no. 4(66) (August 31, 2018): 25–31. Accessed November 25, 2024. https://journals.uran.ua/index.php/1991-0177/article/view/141901.