Nichakorn Khondee และ Ekawan Luepromchai. (2007) Treatment of oily wastewater by chitosan immobilized bacteria. Chulalongkorn University:ม.ป.ท.Nichakorn Khondee และ Ekawan Luepromchai. 2007. Treatment of oily wastewater by chitosan immobilized bacteria. ม.ป.ท.:Chulalongkorn University;Nichakorn Khondee และ Ekawan Luepromchai. Treatment of oily wastewater by chitosan immobilized bacteria. ม.ป.ท.:Chulalongkorn University, 2007. Print.