Multimedia
Norman Borlaug and Joseph A. Rupert at Chapingo's Wheat Field, Mexico
Centro Internacional de Mejoramiento de Maíz y Trigo (CIMMYT), 'Norman Borlaug and Joseph A. Rupert at Chapingo's Wheat Field, Mexico', CIMMYT, 2015
Cuellar-Gomez, Olga Lucia. 2008. Coffee Produced by Women in Cauca, Colombia: Where Has Juanita Valdez Been? Dissertation submitted to The University of Arizona ProQuest Dissertations Publishing. https://www.proquest.com/openview/33a9bec7b0cfab7703abc311d5d3747c/1?pq-origsite=gscholar&cbl=18750.