8Bullding sustainably: how to plan and construct now housing for the 21st century, http://www.wwf.org.uk/filelibrary/pdf/buildingsustainably.pdf.2003.10
9USGBC(2007), LEED for Homes Pilot Rating System Version 1.11a.
10USGBC(2005). LEED for Homes Pilot Rating System Version 1.72a.