1. BRE. “BREEAM: the world's leading design and assessment method for sustainable buildings”. Building Research Establishment. Retrieved from: http://www.breeam.org [last accessed 13.07.13].
2. USGBC. “Leadership in energy and environmental design”. US Green Building Council. Retrieved from: http://www.usgbc.org/leed [last accessed 13.07.13].
3. HKGBC. “BEAM plus project assessment”. Hong Kong Green Building Council. Retrieved from: http://www.hkgbc.org.hk/eng/beamplus-main.aspx [last accessed 13.07.13].
4. JaGBC. “CASBEE – comprehensive assessment system for building environmental efficiency”. Japan GreenBuild Council. Retrieved from: http://www.ibec.or.jp/CASBEE/english/index.htm [last accessed 13.07.13].
5. NIST. “BEES (Building for environmental and economic sustainability)”. The National Institute of Standards and Technology. Retrieved from: http://www.nist.gov/el/economics/BEESSoftware.cfm [last accessed 13.07.13].