1. Beyond Sustainable in State of the World 2013: Is Sustainability Still Possible?;Engelman,2013
2. World Commission on Environment and Development, “Our Common Future”,1987
3. Apollo 11: The Computers That Put Man on the Moon;Saran,2013
4. The Blooding;Wambaugh,1989
5. Genome Detectives Solve a Hospital's Deadly Outbreak;Kolata;The New York Times,2012