<hi xmlns="http://www.tei-c.org/ns/1.0" rend="bold">Crofts, N., Doerr, M., Gill, T., Stead, S. and Stiff, M.</hi> (2008), <hi xmlns="http://www.tei-c.org/ns/1.0" rend="italic">Definition of the cidoc conceptual reference model</hi>, ICOM/CIDOC Documentation Standards Group. CIDOC CRM Special Interest Group 5.