Pumnat Chunchomrat. 1999. Isolation and characterization of biosurfactant producing microorganism. Faculty of Graduate Studies, Mahidol University;
Pumnat Chunchomrat. (1999) Isolation and characterization of biosurfactant producing microorganism . Mahidol University/Bangkok.
Pumnat Chunchomrat. Isolation and characterization of biosurfactant producing microorganism. . Bangkok:Mahidol University, 1999.
Pumnat Chunchomrat. (1999) Isolation and characterization of biosurfactant producing microorganism . Mahidol University/Bangkok.