1. McDonough , William Michael Braungart http://www.mindfully.org/Sustainability/Hannover-Principles.htm 1992
2. Anastas , Paul T. John C. Warner http://www.chm.bris.ac.uk/webprojects2002/howells/twelve_green_chemistry-principle.htm
3. CERES (Coalition for Environmentally Responsible Economies) Principles http://www.ceres.org/our_work/principles.htm
4. Ahwahnee Princip1es http://www.lgc.org/ahwahnee/principles.html
5. DfE Key Strategies http://dfe-sce.nrc-cnrc.gc.ca/dfestra/dfestra_e.html