LIEBOWITZ, David et al. OECD Reviews of School Resources: Portugal 2018. Paris : OECD, 2018. 263 s. OECD Reviews of School Resources. Dostupné na : <https://www.oecd-ilibrary.org/education/oecd-reviews-of-school-resources-portugal-2018_9789264308411-en> ISBN 978-92-64-30839-8. [Počet ex. : 1, z toho voľných 0, prezenčne 1]