OROZCO S., S.H.; Herrera, J.M.; Perez, C.A. 1989. Vivero Centroamericano de Adaptacion y Rendimiento: VICAR 1989. Centro Internacional de Agricultura Tropical (CIAT), Programa Cooperativo Regional de Frijol para Centroamerica, Mexico y El Caribe, Cali, CO. 131 p.
Smale, M et al., 'Farmer management of maize diversity in the Central Valleys of Oaxaca, Mexico: CIMMYT INIFAP -- 1998 Baseline Socioeconomic Survey', 99-09, CIMMYT, 1999
Sandiford, M.; Billingham, M.; Boshier, D. Sistemas de apareamiento de Bombacopsis quinata en bosque, huerto semillero y cerca viva. (Mating systems of Bombacopsis quinata in forests, seed orchards and live fences). Tropical Forestry Papers- Oxford Forestry Institute Department of Plant Science (2003) No. 39, 39-47
Mapedza, Everisto; Tsegai, D.; Bruntrup, M.; McLeman, R. (Eds.) 2019. Drought challenges: policy options for developing countries. Amsterdam, Netherlands: Elsevier. 363p. (Current Directions in Water Scarcity Research Volume 2)
von Grebmer, K et al., 'Índice Global del Hambre de 2009', Welthungerhilfe; International Food Policy Research Institute (IFPRI); Concern Worldwide, Bonn, Germany; Washington, D.C.; Dublin, Ireland, 2009