Siagian, U. W. R., Wenten, I. G., & Khoiruddin, K. (2024). Circular Economy Approaches in the Palm Oil Industry: Enhancing Profitability through Waste Reduction and Product Diversification. Journal of Engineering and Technological Sciences, 56(1), 25–49. https://doi.org/10.5614/j.eng.technol.sci.2024.56.1.3