Sugiarto, L. Y., S. Sugiarto, and H. . Santosa. “Preparing for the IBDP: A Qualitative Evaluation of the Cambridge IGCSE Experience in ACS Jakarta”. International Education Trend Issues, vol. 3, no. 1, Aug. 2025, pp. 47 -65, doi:10.56442/ieti.v3i1.1202.