Ma’mun, S., P. K. Setiawan, dan E. Indrayanto. Amine-Based Carbon Dioxide Absorption: The Ionic Strength Effect on the Monoethanolamine Protonation Constant at Temperatures from 313 to 333K. Vol. 19, no. 2, Desember 2019, hlm. 83-90, https://jurnal.ugm.ac.id/v3/AJChE/article/view/9083.