OECD Handbook for Internationally Comparative Education Statistics : Concepts, Standards, Definitions and Classifications. Paris : OECD, 2017. 121 s. Available on Internet: <https://www.oecd-ilibrary.org/education/oecd-handbook-for-internationally-comparative-education-statistics_9789264279889-en> ISBN 978-92-64-27987-2. [Copy count : 1, currently available 0, at library only 1]