THE DEVELOPMENT OF AN ATTITUDE SCALE TO MEASURE TEACHERS’ ATTITUDES TO OUT-OF-SCHOOL LEARNING ACTIVITIES (OoSLA): A VALIDITY AND RELIABILITY STUDİES. Üçüncü Sektör Sosyal Ekonomi Dergisi [Internet]. 2021 Jun. 25 [cited 2026 Jul. 12];56(2):895-910. Available from: https://tisej.com/index.php/pub/article/view/594