Sutisna, Deni, et al. “The Strategies of students’ Morale Strengthening at School (descriptive Study at Cakranegara Mataram 4 Elementary School)”. Harmoni Sosial: Jurnal Pendidikan IPS, vol. 9, no. 1, Mar. 2023, doi:10.21831/hsjpi.v9i1.29048.