•http://www.fao.org/publications/sofi/2014/es/ (PDF)
•http://www.fao.org/publications/card/en/c/732916a2-ae54-414c-8b3a-30766530797b/ (PDF)
•http://www.fao.org/agriculture/crops/mapa-tematica-del-sitio/theme/seeds-pgr/gbs/es/
•http://www.viacampesina.org/downloads/pdf/sp/Monsanto-Publication-ES-Final-Version.pdf
•http://www.monsantowatch.org/uploads/pdfs/MonsantovfarmersSp.pdf
•http://www.greenpeace.org/mexico/global/mexico/report/2009/3/el-origen-y-la-diversidad-del.pdf
•http://www.viacampesina.org/downloads/pdf/sp/Monsanto-Publication-ES-Final-Version.pdf
•http://www.monsantowatch.org/uploads/pdfs/MonsantovfarmersSp.pdf
•http://www.greenpeace.org/mexico/global/mexico/report/2009/3/el-origen-y-la-diversidad-del.pdf
