Selamat, Rossitah, and Raemy Md Zein. “Ergonomic Risk Assessment of Backpack Leaf Blower Operation: A Case Study of Outdoor Cleaning Staff in a Malaysian Polytechnic”. Politeknik & Kolej Komuniti Journal of Engineering and Technology, vol. 10, no. 2, Nov. 2025, pp. 64-74, https://app.mypolycc.edu.my/journal/PMJET/article/view/770.