Vela, A.V. et al. 2025. Preliminary Analysis of Students’ Problem Solving Ability and Self-Efficacy in IPAS Subject at Community Learning Center (CLC) Sabah Malaysia: Kemampuan Pemecahan Masalah dan Efikasi Diri. Jurnal Penelitian Pendidikan IPA. 11, 4 (Apr. 2025), 1102–1107. DOI:https://doi.org/10.29303/jppipa.v11i4.10154.