“Optimasi pembuatan membran chitosam dalam penurunan COD dan BOD POME (Palm Oil Mill Effluent) [Optimization of the membrane production process to COD and BOD removal of POME (Palm Oil Mill Effluent)]” (2016) Menara Perkebunan, 84(1). doi:10.22302/iribb.jur.mp.v84i1.213.