Sholikha, A. ., and S. Suhartono. “Classroom Teachers’ Efforts to Improve Students’ Discipline in Collecting Assignments in Cluster 6 of Kepanjen Sub-District”. Journal of Education for Sustainability and Diversity, vol. 2, no. 2, Nov. 2023, pp. 313-30, doi:10.57142/jesd.v2i2.93.