COTTON, David - FALVEY, David - KENT, Simon. Market leader : intermediate : business English course book : B1. 3rd ed. Harlow : PEARSON/ FT Publishing, 2010, dotlač 2014. 175 s. Always learning. ISBN 978-1-4082-3695-6. [Počet ex. : 11, z toho voľných 10, prezenčne 1]