Chawisa Wichaidit และ Onruthai Pinyakong. (2014) Utilization of oil mill effluents as alternative substrate for biosurfactant production by Bacillus sp. GY19 and its application in crude oil contaminated soil washing. Chulalongkorn University:ม.ป.ท.Chawisa Wichaidit และ Onruthai Pinyakong. 2014. Utilization of oil mill effluents as alternative substrate for biosurfactant production by Bacillus sp. GY19 and its application in crude oil contaminated soil washing. ม.ป.ท.:Chulalongkorn University;Chawisa Wichaidit และ Onruthai Pinyakong. Utilization of oil mill effluents as alternative substrate for biosurfactant production by Bacillus sp. GY19 and its application in crude oil contaminated soil washing. ม.ป.ท.:Chulalongkorn University, 2014. Print.