Revenue Statistics 2018 : Special Feature: Convergence of Tax Levels and Tax Structures in OECD Countries 1965-2014. Paris : OECD, 2018. 158 s. Dostupné na : <https://www.oecd-ilibrary.org/taxation/revenue-statistics-2018_rev_stats-2018-en> ISBN 978-92-64-30878-7. [Počet ex. : 1, z toho voľných 1, prezenčne 0]