Ashaari, Faleq Fitri, and Sri Yulis M. Amin. “Optimization of Thermoplastic Material for Plastic Injection Molding Process by Using Taguchi Method”. Research Progress in Mechanical and Manufacturing Engineering, vol. 3, no. 1, Aug. 2022, pp. 831-8, https://penerbit.uthm.edu.my/periodicals/index.php/rpmme/article/view/6541.