U. S. Green Building Council LEED. (2009). Green building operations and maintenance: LEED reference guide for green building operation and maintenance. For the operations and maintenance of commercial and institutional buildings (Edition 2009.). Estados Unidos de América: U.S.G.B.C.
Chicago Style CitationU. S. Green Building Council LEED. Green Building Operations and Maintenance: LEED Reference Guide for Green Building Operation and Maintenance. For the Operations and Maintenance of Commercial and Institutional Buildings. Edition 2009. Estados Unidos de América: U.S.G.B.C, 2009.
MLA CitationU. S. Green Building Council LEED. Green Building Operations and Maintenance: LEED Reference Guide for Green Building Operation and Maintenance. For the Operations and Maintenance of Commercial and Institutional Buildings. Edition 2009. Estados Unidos de América: U.S.G.B.C, 2009.