Rangkuti, I.U.P., Purwanto, H. and Pohan, H.S.U. 2021. Pengaruh Jenis Aktivator Adsorben Abu Boiler Pabrik Kelapa Sawit Terhadap Mutu Minyak Sawit Mentah. Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering). 10, 3 (Sep. 2021), 351–355. DOI:https://doi.org/10.23960/jtep-l.v10i3.351-355.