Emmanouilidou Κ., Derri Β., Vasiliadou Ό. and Kioumourtzoglou Ε. (2007) “Academic Learning Time in Elementary Physical Education Class”,
Inquiries in Physical Education and Sport
, 5(1), pp. 1–9. doi: 10.26253/heal.uth.ojs.ispe.2007.1163.