<hi xmlns="http://www.tei-c.org/ns/1.0" rend="bold">Marco H. D. van Leeuwen / Ineke Maas / Andrew Miles</hi> (2002): <hi xmlns="http://www.tei-c.org/ns/1.0" rend="italic">HISCO. Historical International Standard Classification of Occupations</hi>, Leuven.