Indah Kumala Dewi, Putu Aprilliana, 		Suarya, Putu, AND 		Sibarani, James.
" ADSORPSI ION LOGAM Pb2+ DAN Cu2+ OLEH BENTONIT TERAKTIVASI BASA (NaOH)" <em>Jurnal Kimia (Journal of Chemistry)</em> [Online], (1 July 2015)