• AIU (Allegheny Intermediate Unit). 2008. Allegheny Intermediate Unit: GATE apprenticeships. Accessed 9 February 2009.
  • Eshel, G. and P. Martin. 2006. Diet, energy, and global warming. Earth Interactions 10(9): 117.
  • Graedel, T. E. and B. R. Allenby. 2003. Industrial ecology. Second edition. Upper Saddle River , NJ : Pearson Education.
  • Kim, H., G. Keoleian, and Y. Horie. 2006. Optimal household refrigerator replacement policy for life cycle energy, greenhouse gas emissions, and cost. Energy Policy 34(15): 23102323.
  • Lipman, B. 2006. A heavy load: The combined housing and transportation burdens of working families. Washington , DC : Center for Housing Policy.
  • NAE (National Academy of Engineering). 2004. The engineer of 2020: Visions of engineering in the new century. Washington , DC : National Academies Press.
  • NRC (National Research Council). 2000. How People Learn. Washington , DC : National Academies Press.
  • NSF (National Science Foundation). 2008. National Science Foundation grant proposal guide: Chapter 3: NSF proposal processing and review. Accessed 9 February 2009.
  • Schroeder, C. M., T. P. Scott, H. Tolson, T.-Y. Huang, and Y.-H. Lee. 2007. A meta-analysis of national research: Effects of teaching strategies on student achievement in science in the United States. Journal of Research in Science Teaching 44(10): 14361460.
  • Sivaraman, D., S. Pacca, K. Mueller, and J. Lin. 2007. Comparative energy, environmental, and economic analysis of traditional and e-commerce DVD rental networks. Journal of Industrial Ecology 11(3): 7792.