2024. Application Of Problem Based Learning Model To Improve Negotiation Text Writing Skills In Class X AKL 1 SMK Negeri 1 Duduksampeyan. AL-WIJDÃN Journal of Islamic Education Studies. 9, 1 (Jan. 2024), 82–91. DOI:https://doi.org/10.58788/alwijdn.v9i1.3624.