Brown, C. H., C. R. Clement, P. Epps, E. Luedeling, and S. Wichmann. “The Paleobiolinguistics of Domesticated Manioc (Manihot Esculenta)”. Ethnobiology Letters, Vol. 4, June 2013, pp. 61-70, doi:10.14237/ebl.4.2013.5.