OCDE (2008), « Graphique A1.6 - Difference between skilled jobs (ISCO 1-3) and proportion of tertiary educated in 2006 and changes in skilled jobs and tertiary attainment between 1998-2006 », dans Education at a Glance 2008 : OECD Indicators, Éditions OCDE, Paris, https://doi.org/10.1787/eag-2008-grapha1_6-en.