Pandapotan Hutajulu, B. .; Trisnamansyah, S. .; Suhendraya Muchtar, H. .; Sulastini, R. . State Defense Education Management Pada Ppkn Teachers To Prepare Middle School Students Who Spirit Of Patriotism At Smp Negeri Dki Jakarta. IJERSC 2022, 3, 1412-1417.