Іващенко, О., and О. Макарова. 2013. “Comparative Description of Motive Preparedness of Schoolchildren Is 8—9 Classes”. Teorìâ Ta Metodika Fìzičnogo Vihovannâ, no. 1 (March), 40-46. https://doi.org/10.17309/tmfv.2013.1.1009.