Yurayara , K., P. Mahakhar, K. Vichitphan, S. Vichitphan, D. Khamprasert, and J. Swangkeaw. “Carboxymethyl Cellulase Production by Penicillium oxalicum HS1-3 Isolated from Soil in Chaiyaphum Province”. KKU Science Journal, vol. 40, no. 1, Mar. 2012, pp. 75-82, https://ph01.tci-thaijo.org/index.php/KKUSciJ/article/view/253060.