Zairi , M. H., M. A. A. Adlan, N. F. Tarudin, and R. Md Hanafiah. “Assessing The Summons Compound for Modifying Motorcycle Exhaust Pipes towards an Environmentally Sustainable”. Environment-Behaviour Proceedings Journal, vol. 10, no. SI41, Dec. 2025, pp. 65-71, doi:10.21834/e-bpj.v10iSI41.7734.