Key figures on Europe. 2014 ed. Luxembourg : Publications Office of the European Union, 2014. 200 s. Pocketbooks. Dostupné na : <http://bookshop.europa.eu/is-bin/INTERSHOP.enfinity/WFS/EU-Bookshop-Site/en_GB/-/EUR/ViewPublication-Start?PublicationKey=KSEI14001> ISBN 978-92-79-34167-0. ISSN 1830-7892.