M. N. Ahmad, N. Adeera, M. H. Osman Mazran, and M. Khalid. “The Significant Improvement on The Design of Pedestrian Traffic Light Using Boothroyd Dewhurst Design for Assembly (DFA) Method: A Case Study”. Journal of Advanced Research Design, vol. 25, no. 1, Sept. 2023, pp. 11-19, https://akademiabaru.com/submit/index.php/ard/article/view/4793.