N. M. Anaqiya, A. N. Bualangi, F. Faisal, and F. Gani, “Optimization of a Green Detergent (PepClean) Formulated from Pepper Washing Effluent and Lime Leaf Extract (Citrus aurantifolia) for Sustainable Textile Sanitation”, RPBJ, vol. 8, no. 2, pp. 093-103, Aug. 2026.