Hamzah, A., M.T.S. Helmy Syamza, M.A. Ahmad, A.H. Ariffin, M.S. Solah, and N.F. Paiman. 2021. “Assessing Motorcycle Safety Helmet Standards Compliance”. Journal of the Society of Automotive Engineers Malaysia 3 (4). Kuala Lumpur, Malaysia:48-56. https://doi.org/10.56381/jsaem.v3i4.139.