Vernadakis Ν., Antoniou Π., Kellis Η. and Kioumourtzoglou Ε. (2003) “Comparison of direct instruction and computer-assisted instruction on learning the skill off setting in volleyball”., Inquiries in Physical Education and Sport, 1(1), pp. 36–42. doi: 10.26253/heal.uth.ojs.ispe.2003.989.