Tanesab, D. P. Y., Manesi, D., Mukti, D. M., & Fahrizal, F. (2026). The Effect of Problem-Based Learning on Students’ Cognitive Ability in Vocational Fuel System Learning. Nusantara: Jurnal Pendidikan Indonesia, 6(3), 591–601. https://doi.org/10.62491/njpi.2026.v6i3-3