1. [USDA-AMS] U.S. Department of Agriculture Agricultural Marketing Service (2013a) United States Standards for Grades of Snap Beans for Processing. http://www.ams.usda.gov. Accessed October 15, 2013
2. Cotton Growth and Yield Response to Simulated 2,4-D and Dicamba Drift
3. Arledge-Keene A , Mitchell P (2010) Economic Impact of Specialty Crop Production and Processing in Wisconsin. UW-Madison Agricultural and Applied Economics Working Paper. http://www.aae.wisc.edu/pdmitchell/Crop_impacts.pdf. Accessed September 30, 2013
4. Heap I (2013) International Survey of Herbicide Resistant Weeds. http://www.weedscience.com. Accessed September 20, 2013.
5. Comparison of dicamba and 2,4-D injury to field-grown tomatoes;Jordan;HortScience,1974