Gultom, E., and B. Aritonang. “PELATIHAN PEMBUATAN DETERJEN DI SMKN 3 MEDAN”. Jurnal Abdimas Mutiara, vol. 1, no. 1, Aug. 2020, pp. 139-45, https://e-journal.sari-mutiara.ac.id/index.php/JAM/article/view/1275.