Lubis, Annisa Athaya Putri, et al. “Community Service Through Real Work Lectures (KKN) in Sungai Ular Village, Langkat Regency”. QISTINA: Jurnal Multidisiplin Indonesia, vol. 3, no. 2, Nov. 2024, pp. 1806-13, doi:10.57235/qistina.v3i2.4358.