Kovaļovs, Atis, et al. “RELATIONSHIP BETWEEN MOTIVATION OF CHILDREN AND YOUTH AND TIME SPENT IN FOOTBALL TRAINING (GRADE 5-9)”.
SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference, vol. 2, May 2024, pp. 563-74,
https://doi.org/10.17770/sie2024vol2.7879.