PISA 2015 Assessment and Analytical Framework : Science, Reading, Mathematic, Financial Literacy and Collaborative Problem Solving. Revised edition. Paris : OECD, 2017. 258 s. PISA. Available on Internet: <https://www.oecd-ilibrary.org/education/pisa-2015-assessment-and-analytical-framework_9789264281820-en> ISBN 978-92-64-28184-4. [Copy count : 1, currently available 1, at library only 0]