“Pengenalan K3 ( Kesehatan Dan Keselamatan Kerja) Di SMP Advent Ratahan”. JURNAL PKM DHARMABAKTI 1, no. 2 (January 24, 2025): 18–22. Accessed March 15, 2025. https://ejournal.unsrittomohon.ac.id/index.php/pkmdharmabakti/article/view/114.