C. Azurdia, K.A. Williams, D.E. Williams, V. Van Damme, A. Jarvis and S.E. Castaño. (2011). Atlas of Guatemalan Crop Wild Relatives. Available at /ba/atlascwrguatemala United States Department of Agriculture/Agricultural Research Service (USDA/ARS); Bioversity International; International Center for Tropical Agriculture (CIAT); and the University of San Carlos in Guatemala (FAUSAC).