Pupon, S, M Nugraha, Y Febryani, RS Tasnim, U Lestari, and A Sarmada. 2020. “IDENTIFICATION OF DEFECTS OF PET AND HDPE-BASED DRINKING WATER PACKAGING PRODUCTS”. Jurnal Ilmiah Publipreneur 8 (1):48-56. https://doi.org/10.46961/jip.v8i1.57.