Hakim J, Matin M, Supadi S. ANALYSIS OF THE EFFECT OF KOHESIVITAS GROUPS AND EFFECTIVENESS OF TEACHER WORK PRODUCTIVITY. IJER [Internet]. 2018Sep.6 [cited 2024Apr.26];5(1):183-90. Available from: https://journal.unj.ac.id/unj/index.php/ijer/article/view/8607