OECD. Directorate for Education. Education at a Glance 2010: OECD Indicators. Paris, 2010. Disponível em: <http://www.oecd.org/document/52/0,3746,en_2649_39263238_45897844_1_1_1_1,00.html>. Acesso em: 25 out. 2011.
