N. Afiqah S, A. Zafiah M. Rus, A. Shahrizan Syah, F. Hazwanee M. J., N. M, and S. Aida I, “Waste Polymer Blended with Copolymer Polypropylene to Enhance Mechanical Properties Using Injection Moulding”, IJET, vol. 7, no. 3.28, pp. 252–257, Aug. 2018, doi: 10.14419/ijet.v7i3.28.23431.