Seedao, C., T. Rachphirom, M. Phiromchoei, and W. Jangiam. “Anionic Dye Adsorption from Aqueous Solutions by Chitosan Coated Luffa Fibers”. ASEAN Journal of Chemical Engineering, Vol. 18, no. 2, Dec. 2018, pp. 31-40, https://dev.journal.ugm.ac.id/v3/AJChE/article/view/9022.