Gilman, Paul; Newman, Martin. "Informing the Future of the Past: Guidelines for Historic Environment Records (Second Edition)". English Heritage, Historic Scotland, the Royal Commission on the Ancient and Historical Monuments of Scotland (RCAHMS), the Royal Commission on the Ancient and Historical Monuments of Wales (RCAHMW), the Association of Local Government Archaeological Officers UK (ALGAO UK) and the Archaeology Data Service (ADS). Retrieved 24 January 2013.