Brondial, Y. P. “Buffering Apabiliti of B-Chloropropionic Acid-Sodium B-Chloropropionate Slstellin Acidic Geotherllal Brine”. ASEAN Journal of Chemical Engineering, Vol. 4, no. 2, Dec. 2004, pp. 7-15, https://dev.journal.ugm.ac.id/v3/AJChE/article/view/7594.