• A framework for Land Evaluation. FAO Soils Bulletin 32, FAO, Rome: FAO, 1976 null
  • Lecture Notes on the Major Soils of the World. World Soil Resources Reports 94, FAO, Rome: FAO, 2001 null
  • Soil Genesis and Classification (4th ed). Iowa State University Press, Ames. (Capítulos 2 - 6).: Buol, S.W., Hole, F.D., Mc Cracken, R.J., Southard, R.J. 1997 null
  • World Reference Base for Soil Resources. World Soil Resources Reports 103, FAO, Rome: IUSS Working Group WRB, 2006 null
  • The Nature and Properties of Soil (14th edition revised). Pearson International Edition. Pearson Education, Inc., Upper Saddle River, New Jersey. (Os mesmos capítulos da edição anterior): Brady, N. C. & Weil, R.R. 2008 null


  • Properties and Management of Soils in the Tropics. John Wiley & Sons, New York.: Sanchez, P. 1976 null
  • Keys to Soil Taxonomy (10th Ed). USDA/NCRS, Washington.: Soil Survey Staff 2006 null
  • Down to earth: Soil degradation and sustainable development in Europe - A challenge for the 21st century. Environmental issue report No 16.: EEA, 2000 null
  • Myths and Science of Soils of the Tropics, SSSA, Special Publication, no. 29. Madison.: Sanchez, P.A. & Lal, R. 1992 null
  • Europe’s environment: the third assessment. Environmental assessment report, 10. (Chap. 9: Soil Degradation): European Environment Agency, 2003 null