Siti Sumiati Sulistya, and Jalaluddin Basyir. “PT Fire Safety Indonesia’s Digital Communication Strategy to Increase Customer Interest in K3 Certification Services”. Communicatio: Jurnal Ilmu Komunikasi 1, no. 2 (December 29, 2025): 34–43. Accessed May 14, 2026. https://jurnal.ut.ac.id/index.php/communicatio/article/view/13179.