Bibliografia
Principal
- Tarbuck, E. J. e Lutgens, F. K. (2009) Earth Science (12th ed)
- Merrits, D., De Wet, A. e Menking, K. (2007) Environmental Geology. An Earth System Approach
- Wilkinson, D. M. (2007) Fundamental Processes in Ecology: An Earth Systems Approach (3rd ed)