Fatimah, I., S. Wang, K. Wijaya, N. -, dan N. -. A Comparative Study on Aluminium Pillared Smectite Synthesis From Synthetic Saponite and Indonesian Montmorillonite. Vol. 8, no. 1, Desember 2008, hlm. 70-78, https://journal.ugm.ac.id/v3/AJChE/article/view/7702.