Insanno, Jenius Setio. “PERBEDAAN UNSAFE ACTIONS ANTAR SHIFT KERJA PADA BAGIAN THREADING UNIT PRODUKSI I PT X DI SURABAYA”. The Indonesian Journal of Occupational Safety and Health 5, no. 2 (May 5, 2017): 132–141. Accessed August 5, 2024. https://e-journal.unair.ac.id/IJOSH/article/view/4180.