[1]
Tzetzis Γ., Goudas Μ. and Kyratsou Ε. 2005. A Comparison of Physical Activity Levels, Goal Orientations and Perceived Competence in 5th and 6th Grade Elementary School Students at Physical Education Classes . Inquiries in Physical Education and Sport. 3, 1 (Feb. 2005), 1–12. DOI:https://doi.org/10.26253/heal.uth.ojs.ispe.2005.1064.