European Commission, Standardisation Mandate to CEN, CENELEC and ETSI in support of European accessibility requirements for public procurement in the built environment, M/420 EN, 21 December 2007.
An Coimisiún Eorpach, Sainordú Caighdeánaithe chuig CEN, CENELEC agus ETSI mar thaca le ceanglais inrochtaineachta Eorpacha don soláthar poiblí sa timpeallacht thógtha, M/420 EN, 21 Nollaig 2007.