OECD Regions and Cities at a Glance 2018. Paris : OECD, 2018. 164 s. OECD Regions and Cities at a Glance. Dostupné na : <https://www.oecd-ilibrary.org/governance/oecd-regions-and-cities-at-a-glance-2018_reg_cit_glance-2018-en> ISBN 978-92-64-30508-3. [Počet ex. : 1, z toho voľných 0, prezenčne 1]