Purwanto, Sigit, Agung Wibowo, and Titing Suharti. “The OCB Determinant of Employees in Non-Profit Organization; Leadership Role and Work Engagement”. INOVATOR 12, no. 2 (August 29, 2023): 251–263. Accessed November 15, 2024. http://150.107.142.43/index.php/INOVATOR/article/view/17632.