Vernadakis Νίκος, Antoniou Παναγιώτης, Kellis Ηρακλής, and Kioumourtzoglou Ευθύµης. 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):36-42. https://journals.lib.uth.gr/index.php/inquiries/article/view/989.