Yıldız, Nuh Osman, Güçlü Özen, and Tayfun Gürkan Bostancı. 2016. “The Effects of One-Day Outdoor Education on Self- Efficacy”. Journal of Human Sciences 13 (3):6098-6103. https://j-humansciences.com/ojs/index.php/IJHS/article/view/4296.