Abdul Samad, N. I., A. F. Zainul Maridin, N. A. Hamzah, S. M. Anua, M. N. Mamat, and M. N. Mohd Nawi. “Prevalence Of Back Pain Among Food Delivery Riders In Kota Bharu, Kelantan: A Preliminary Study”. Journal of Energy and Safety Technology (JEST), vol. 5, no. 2, Feb. 2023, pp. 52-60, doi:10.11113/jest.v5n2.118.