Agustika, G. N. S. ., and K. S. . Diputra. “Effectiveness of Hybrid Project-Based Learning With Digital Portfolios in Enhancing Mathematics Pedagogical Content Knowledge”. Indonesian Journal of Educational Development (IJED), vol. 6, no. 2, Aug. 2025, pp. 293-08, doi:10.59672/ijed.v6i2.4923.