Putri, E., 		Ratnasari, D., 		Harumsari, A., 		Lestari, V., & 		Wardhani, S.
2017 Feb  1.  Utilization of Sludge from Sidoarjo for Synthesis of Microball Photocatalist of Fe2O3 zeolit-chitosan as Fermented Soybean Waste-Degrading Agent. Jurnal ILMU DASAR. [Online] 17:2