Faqih, Y., D. Apriani, and I. Hamidi. “Production Cost Structure and Profit In The Plastic Industry For Packaging In Indonesia”. EKOMBIS REVIEW: Jurnal Ilmiah Ekonomi Dan Bisnis, Vol. 13, no. 3, July 2025, pp. 2703–2714, doi:10.37676/ekombis.v13i3.7741.