Pumnat Chunchomrat. (1999) Isolation and characterization of biosurfactant producing microorganism. Mahidol University,:ม.ป.ท.Pumnat Chunchomrat. 1999. Isolation and characterization of biosurfactant producing microorganism. ม.ป.ท.:Mahidol University,;Pumnat Chunchomrat. Isolation and characterization of biosurfactant producing microorganism. ม.ป.ท.:Mahidol University, 1999. Print.