STRATEGIC MANAGEMENT PRACTICES ORGANIZATION OVER EMPLOYEE OWNERSHIP EFFECTS ON PERFORMANCE: A RESEARCH ON PRIVATE INSTITUTIONS PROVIDING HIGHSCHOOL AND MIDDLE SCHOOL EDUCATION IN ISTANBUL. Üçüncü Sektör Sosyal Ekonomi Dergisi. 2021;56(4):2335-2354. doi:10.15659/3.sektor-sosyal-ekonomi.21.10.1657