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