Gempur Santoso. “ERGONOMIC USE AND SHAPE OF MOBILE PHONES TO AVOID WORK ACCIDENTS”. Jurnal Cakrawala Ilmiah 3, no. 9 (May 27, 2024): 2669–2674. Accessed July 5, 2025. https://mail.bajangjournal.com/index.php/JCI/article/view/7782.