Supattra Lorrattanasak และ Ekawan Luepromchai. (2013) Biosurfactant production by Immobilized Gordonia Sp. Gy40 cells and application for petroleum removal from seawater. Chulalongkorn University:ม.ป.ท.Supattra Lorrattanasak และ Ekawan Luepromchai. 2013. Biosurfactant production by Immobilized Gordonia Sp. Gy40 cells and application for petroleum removal from seawater. ม.ป.ท.:Chulalongkorn University;Supattra Lorrattanasak และ Ekawan Luepromchai. Biosurfactant production by Immobilized Gordonia Sp. Gy40 cells and application for petroleum removal from seawater. ม.ป.ท.:Chulalongkorn University, 2013. Print.