Aulolazmi, Nurul Nadhirah, et al. “Study on Fused Filament Fabrication (FFF) 3D Printer Parameter for Polyproplene Biomedical 3D Printing”. Progress in Engineering Application and Technology, vol. 6, no. 1, Apr. 2025, pp. 840-8, https://penerbit.uthm.edu.my/periodicals/index.php/peat/article/view/19105.