OECD Economic Surveys: Spain 2018 : November 2018. Volume 2018/Supplement 4. Paris : OECD, 2018. 134 s. OECD Economic Surveys. Dostupné na : <https://www.oecd-ilibrary.org/economics/oecd-economic-surveys-spain_19990421> ISBN 978-92-64-30854-1.