1. The Survey of Adult Skills
The Survey of Adult Skills : Reader’s Companion. 3rd ed. Paris : OECD, 2019. 132 s. OECD skills studies. Available on Internet: <https://www.oecd-ilibrary.org/education/the-survey-of-adult-skills_f70238c7-en> ISBN 978-92-64-63171-7.