Nattapong Tuntiwiwattanapun และผู้แต่งคนอื่นๆ. (2016) Optimization of in-situ transesterification process for soybean and spent coffee grounds biodiesel. Chulalongkorn University:ม.ป.ท.Nattapong Tuntiwiwattanapun และผู้แต่งคนอื่นๆ. 2016. Optimization of in-situ transesterification process for soybean and spent coffee grounds biodiesel. ม.ป.ท.:Chulalongkorn University;Nattapong Tuntiwiwattanapun และผู้แต่งคนอื่นๆ. Optimization of in-situ transesterification process for soybean and spent coffee grounds biodiesel. ม.ป.ท.:Chulalongkorn University, 2016. Print.