Gotzaridis Χρήστος, Papaioannou Αθανάσιος, Antoniou Παναγιώτης, and Albanidis Ευάγγελος. 2007. “The Effect of an Interdisciplinary Teaching Approach on Seventh-Grade Pupils’ Motivation in Physical Education Class”. Inquiries in Physical Education and Sport 5 (1):52-62. https://doi.org/10.26253/heal.uth.ojs.ispe.2007.1181.