ISCED 2011 operational manual : guidelines for classifying national education programmes and related qualifications. Paris : OECD ; Brussels : European Union ; Montreal : UNESCO - UIS, 2015. 114 s. Available on Internet: <http://www.oecd-ilibrary.org/education/isced-2011-operational-manual_9789264228368-en> ISBN 978-92-64-22835-1. [Copy count : 1, currently available 1, at library only 0]

Literacy skills for the world of tomorrow : further results from PISA 2000. Paris : OECD : UNESCO Institute For Statistics, 2003. 389 s. ISBN 92-64-10286-8. [Copy count : 2, currently available 2, at library only 0]