Zahrim, A. Y., A. Nazimah, dan S. Rosalam. Lignin Removal From Aqueous Solution Using Calcium Lactate: The Effect Of Polymers And Magnesium Hydroxide As A Flocculant Aids. Vol. 14, no. 1, Desember 2014, hlm. 25-36, https://jurnal.ugm.ac.id/v3/AJChE/article/view/8476.