abam Syahputra Manurung. “DAMPAK PERKEBUNAN KELAPA SAWIT TERHADAP SURPLUS PENDAPATAN MASYARAKAT (STUDY KASUS KEC.BANDAR PASIR MANDOGE, KAB. ASAHAN) ”. JITA (Journal of Information Technology and Accounting), Vol. 4, no. 2, Dec. 2021, pp. 63-69, https://jurnal.uimedan.ac.id/index.php/JITA/article/view/710.