Sanchez, P. (1976) Properties and Management of Soils in the Tropics. John Wiley & Sons, New York.
Morgan, M.P.C. (2005) Soil Erosion and Conservation. Blackwell Publishing ltd.
Madeira, M. & Pinto Ricardo, R. (2012) Factores e Processos de Evolução dos Solos (página WEB da unidade curricular)
IUSS Working Group WRB. (2015) World Reference Base for Soil Resources 2014, update 2015. World Soil Resources Reports No. 106. FAO, Rome.
FAO (2007) Land Evaluation. Towards a revised framework. Land and Water Discussion Paper 6, FAO, Rome.
Buol, S.W., Hole, F.D., Mc Cracken, R.J., Southard, R.J. (1997) Soil Genesis and Classification (4th ed). Iowa State University Press, Ames.
Brady, N. C. & Weil, R.R. (2008) The Nature and Properties of Soil (14th edition revised). Pearson International Edition. Pearson Education, Inc., Upper Saddle River, New Jersey.