1. FY 2010 Nationwide Survey of Distillers Grains for Antibiotic Residues,2009
2. A Guide to Distiller’s Dried Grains with Solubles (DDGS),2012
3. Agricultural Marketing Resource Center, Cooperative Extension Service, Iowa State University of Science and Technology, Ames, Iowa, 2016. http://www.extension.iastate.edu/agdm/crops/outlook/dgsbalancesheet.pdf (Accessed January 3, 2017)
4. Food vs. Fuel;Renewable Fuels Association,2017
5. Distillers Grains Technology Council, 2014, http://www.distillersgrains.org/grains/availability.html (Accessed January 3, 2017)