“Selektivitas Adsorpsi Asam Lemak Bebas (ALB) Dan Beta Karoten Minyak Sawit Mentah Menggunakan Metakaolin Teraktivasi Kalium Karbonat (K2CO3)”. Journal of Chemical Process Engineering, vol. 5, no. 1, May 2020, pp. 9-26, https://doi.org/10.33536/jcpe.v5i1.842.