Kontou Μ. and Karagiorgou Α. 2006. The Effect of a Goal Setting Program for the Improvement of Performance of Children with Mild Mental Retardation during Physical Education Classes. Inquiries in Physical Education and Sport. 4, 1 (Mar. 2006), 39–44. DOI:https://doi.org/10.26253/heal.uth.ojs.ispe.2006.1117.