Wantrilita, Agil, and Eli Rohaeti. “The Effect of PBL-STEM on Improving Problem Problem-Solving Ability and Self-Efficacy of Vocational High School Students”. Jurnal Pendidikan Matematika Dan Sains, vol. 13, no. Special_issue, Sept. 2025, pp. 226-3, doi:10.21831/jpms.v13iSpecial_issue.89341.