:BOND, Ian - LEONARD, Dick - TAYLOR, Robert. The Routledge Guide to the European Union. 2nd Edition. Abingdon : Routledge/Taylor & Francis Group, 2025. 645 s. Dostupné na : <https://ebookcentral.proquest.com/lib/euba-ebooks/detail.action?docID=31881619> ISBN 9781351008549.