Sumarni R, Santoso S, Hamid A. The influence of occupational health and safety signs on safe behavior among oil palm factory workers at PT. Sewangi Sawit Sejahtera. midwifery [Internet]. 2024 Apr. 16 [cited 2026 Jul. 28];12(1):293-302. Available from: https://www.midwifery.iocspublisher.org/index.php/midwifery/article/view/1445