Halim, Isa, Radin Zaid Radin Umar, Muhammad Syafiq Syed Mohamed, Nadiah Ahmad, Vinothini Padmanathan, and Adi Saptari. 2019. “The Influence of Hand Tool Design on Hand Grip Strength: A Review”. International Journal of Integrated Engineering 11 (6): 53-69. https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/3802.