Yotthachai Piwpankaew และ Suttipun Keawsompong. (2014) Cloning and expression of mannanase from bacillus circulans NT 6.7. Kasetsart University:ม.ป.ท.Yotthachai Piwpankaew และ Suttipun Keawsompong. 2014. Cloning and expression of mannanase from bacillus circulans NT 6.7. ม.ป.ท.:Kasetsart University;Yotthachai Piwpankaew และ Suttipun Keawsompong. Cloning and expression of mannanase from bacillus circulans NT 6.7. ม.ป.ท.:Kasetsart University, 2014. Print.