Abdul Haq, Reazul Haq, et al. “Mechanical Properties of PCL PLA Composite Sample Produce from 3D Printer and Injection Molding”. International Journal of Integrated Engineering, vol. 11, no. 5, Sept. 2019, pp. 102-8, https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/3956.