MASCULL, Bill. Market leader : intermediate : business English teacher's resource book : B1-B2. 3rd ed. Harlow : PEARSON/ FT Publishing, 2010, dotlač 2013. 216 s. Always learning. ISBN 978-1-4082-4949-9. [Počet ex. : 1, z toho voľných 1, prezenčne 0]