Yurayara , Kattaleeya, Polson Mahakhar, Kanit Vichitphan, Sukanda Vichitphan, Duangdao Khamprasert, and Jutaporn Swangkeaw. 2012. “Carboxymethyl Cellulase Production by Penicillium oxalicum HS1-3 Isolated from Soil in Chaiyaphum Province”. KKU Science Journal 40 (1):75-82. https://ph01.tci-thaijo.org/index.php/KKUSciJ/article/view/253060.