“Workshop on the Cost of Goods Manufactured and Business Viability for SMK Tri Ratna Jakarta Students”. Jurnal Abdimas Sosial, Ekonomi, dan Teknologi 3, no. 2 (June 14, 2025): 71–76. Accessed October 31, 2025. https://www.jurnaltsm.id/index.php/aset/article/view/2764.