Panjaitan, B., K. N. Tobing, and S. Harahap. “PENYULUHAN MANFAAT SARAPAN DI SMK YAPIM SEI ROTAN MEDAN”. Jurnal Abdimas Mutiara, vol. 1, no. 1, Mar. 2020, pp. 82-88, https://e-journal.sari-mutiara.ac.id/index.php/JAM/article/view/1101.