Irawan, Dani, and Rahayu Bisono. “RANCANG BANGUN PROTOTYPE MESIN EKSTRUSI POLIMER SINGLE SCREW”. Prosiding Seminar Nasional Multidisiplin 1 (October 16, 2018): 13-19. Accessed October 22, 2020. http://ejournal.unwaha.ac.id/index.php/snami/article/view/259.