Shaw, David R., Stanley Culpepper, Micheal Owen, Andrew Price, y Robert Wilson. «Herbicide-Resistant Weeds Threaten Soil Conservation Gains: Finding a Balance for Soil and Farm Sustainability». Council for Agricultural Science and Technology (CAST) (mayo 15, 2013). Accedido julio 1, 2026. https://publications.cast-science.org/CAST/article/view/95.