Schneider, K. R., Goodrich Schneider, R. M., Hubbard, M. A., & Chang, A. (2009). Preventing Foodborne Illness: E. coli O157:H7: FSHN031/FS097, rev. 11/2009. EDIS, 2009(10). https://doi.org/10.32473/edis-fs097-2009