Halim, I., R. Z. Radin Umar, M. S. Syed Mohamed, N. Ahmad, V. Padmanathan, and A. Saptari. “The Influence of Hand Tool Design on Hand Grip Strength: A Review”. International Journal of Integrated Engineering, Vol. 11, no. 6, Sept. 2019, pp. 53-69, https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/3802.