Cross References:EN 15221-1:2006EN 15221-4:2011EN 15221-6:2011EN 15221-2:2006EN 15221-3EN 15221-5:2011ISO 23185:2009NEN 2748:2001BS 8536:2010BCO (2005)BIFM (1996)EFQM (2007)GEFMA (1996)IPD (2010)IPD (2009)IPD (2008)RICS (2007)All current amendments available at time of purchase are included with the purchase of this document.