Ulfatun, U. N. P., M. Sahri, J. Wardana, and J. M. Y. Raja’I. “Overview of Knowledge of Using PPE to Support Safety of Workers at CV. Duta Makmur Abadi”. Jurnal Pengabdian Kepada Masyarakat Nusantara, vol. 4, no. 4, Nov. 2023, pp. 3530-6, https://ejournal.sisfokomtek.org/index.php/jpkm/article/view/1850.