Brown, C. H., C. R. Clement, P. Epps, E. Luedeling, and S. Wichmann. “The Paleobiolinguistics of the Common Bean (Phaseolus Vulgaris L.)”. Ethnobiology Letters, Vol. 5, Oct. 2014, pp. 104-15, doi:10.14237/ebl.5.2014.203.