1. Andrade, A. (1986). Investigacion arqueologica de los Antrosoles de Araracuara. Fundacion de Investigaciones Arqueológicas Nacionales, 31, 19–64, 91—103.
2. Bain, D.C., McHardy, W.J., & Lachowski, E.E. (1994). X-ray fluorescence spectroscopy and microanalysis. In M. J. Wilson (Ed.), Clay Mineralogy — Spectroscopic and Chemical Determinative Methods (pp. 260–299). London: Chapman and Hall.
3. Bain, D.C., & Smith, B.F.L. (1994). Chemical Analysis. In M.J. Wilson (Ed.), Clay Mineralogy — Spectroscopic and Chemical Determinative Methods (pp. 300–332). London: Chapman and Hall.
4. Clement, C.R., McCann, J.M., & Smith, N.J.H. (2003). Agrobiodiversity in Amazonia and its relationship with Dark Earths. In J. Lehmann, D.C. Kern, B. Glaser, & W.I. Woods (Eds.), Amazonian Dark Earths:Origin, Properties, Management (pp. 159–179). The Netherlands: Kluwer Academic Publishers.
5. Correa, C.G. (1987). Horticultores pré-históricos do litoral do Pará, Brasil. Revista da Arqueologia, 4, 137–252.