Burhanuddin, B., & Nasution, B. (2025). Implementation of Inquiry-Based Learning (IBL) Through Ancient Tombs of Sultan Barumun Era to Enhance Historical Thinking Skills of MAN Barumun Students: A Qualitative Analysis. International Journal of Community Service (IJCS), 5(1), 01–21. https://doi.org/10.55299/ijcs.v5i1.1658