Poland 2015 : [working better with age]. Paris : OECD, 2015. 148 s. Ageing and employment policies. Dostupné na : <http://www.oecd-ilibrary.org/employment/ageing-and-employment-policies-poland-2015_9789264227279-en> ISBN 978-92-64-22726-2. [Počet ex. : 1, z toho voľných 1, prezenčne 0]