Multimedia
Commercial pollination services
CTA. 2007. Commercial pollination services. Rural Radio Resource Pack 07/2. Wageningen, The Netherlands: CTA.
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.