<hi xmlns="http://www.tei-c.org/ns/1.0" rend="bold">IPTC</hi> (2014): <hi xmlns="http://www.tei-c.org/ns/1.0" rend="italic">IPTC - NAA Information Interchange Model Version 4.2</hi>. International Press Telecommunicatoins Council <ref xmlns="http://www.tei-c.org/ns/1.0" target="http://www.iptc.org/std/IIM/4.2/specification/IIMV4.2.pdf">http://www.iptc.org/std/IIM/4.2/specification/IIMV4.2.pdf</ref> [letzter Zugriff 25. August 2016].