SIMATUPANG, Leo Fernando, et al. “Differentiation Development Strategy at University of HKBP Nommensen Pematangsiantar Through Swot Method {Strength,Weaknesses,Oppurtunities and Threats}”. International Journal of Environmental, Sustainability, and Social Science, vol. 5, no. 6, Nov. 2024, pp. 2024-33, doi:10.38142/ijesss.v5i6.1277.