Maria, Vastaki, Dania Aspasia, Issari Philia, and Gkiosos Ioannis. 2026. “Developing Responsibility through Action Research: Implementing Hellison’s Model As a Whole-School Approach in Primary Education”. International Journal of Physical Education, Fitness and Sports 15 (1):28-50. https://doi.org/10.54392/ijpefs2613.