OECD (2009), "Table A1.3a - Population with tertiary education (2007): Percentage of the population that has attained tertiary-type B education or tertiary-type A and advanced research programmes, by age group", in Education at a Glance 2009: OECD Indicators, OECD Publishing, Paris, https://doi.org/10.1787/eag-2009-tablea1_3a-en.