Anggraeni, Karina Tri, and Beny Wijarnako Kertopati. “An Effort to Increase the Learning Activeness of Class VIII B Students in IPS Subjects With the Problem Solving Method at SMP Pemda 2 Kesugihan”. Proceedings Series on Social Sciences & Humanities, vol. 25, Aug. 2025, pp. 832-4, https://conferenceproceedings.ump.ac.id/pssh/article/view/1797.