Sjofjan , Osfar, and Tri Ardyati. 2011. “Extracellular Amylase Activity of Amylolytic Bacteria Isolated from Quail’S (Coturnix Japonica) Intestinal Tract in Corn Flour Medium”. International Journal of Poultry Science 10 (5): 411–415. https://doi.org/10.3923/ijps.2011.411.415.