Lubis, Sulaiman, et al. “PKM KELOMPOK PENGRAJIN PURUN DESA ARAPAYUNG SERDANG BEDAGAI”. Prosiding Seminar Nasional Pengabdian Kepada Masyarakat, vol. 1, no. 01, Dec. 2020, pp. SNPPM2020ST-78 - SNPPM2020ST-83, https://journal.unj.ac.id/unj/index.php/snppm/article/view/19692.