Pesch, K. H., and R. A. Rahadi. “Evaluating Profitability of Red Mud Based Geopolymer Brick by Using The Cost Benefit Analysis Framework”. Ranah Research : Journal of Multidisciplinary Research and Development, Vol. 7, no. 2, Dec. 2024, pp. 1061-73, doi:10.38035/rrj.v7i2.1291.