OGUNLEYE, B.O. и Ojo, O.R. 2019. Impact of physical fitness activities on students’ Basic Science achievement in selected Nigerian secondary schools. ЕЖЕГОДНЫЙ ЖУРНАЛ ТЕХНИЧЕСКОГО УНИВЕРСИТЕТА ВАРНЫ, БОЛГАРИЯ. 3, 2 (дек. 2019), 21–31. DOI:https://doi.org/10.29114/ajtuv.vol3.iss2.145.