Sulaiman, Junaidah, Muhammad Farid Shaari, and Salwa Mahmood. 2022. “Semi-Automatic Pneumatic Actuated Otak-Otak Pin Insertion Machine”. Progress in Engineering Application and Technology 3 (1): 656-62. https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/6335.