Maslahat, Mamay, et al. “POTENSI BIOSORBEN TANDAN KOSONG KELAPA SAWIT (TKKS) DALAM RECOVERY LIMBAH FENOL”. Sains Natural: Journal of Biology and Chemistry, vol. 2, no. 2, Nov. 2017, pp. 155-68, doi:10.31938/jsn.v2i2.45.