PanjaitanHamonangan Panjaitan, J. R., Yosia Situmorang, D., & Sykhles Tarigan, E. (2026). Production and Economic Evaluation of Biobased Detergent from Waste Cooking Oil. Applied Science and Engineering Progress, 19(4), 8098. https://doi.org/10.14416/j.asep.2026.04.002