Dictionary of Current Idiomatic Enh
Cowie/Mackin

Communication for Business Lehrbuch
Abegg, Birgit

Living English Structure
Allan, W.Stannard

Topics, themes & texts
Woxbrandt / Kunze

So spricht der Amerikaner
Langenscheidt

Focus Extra Practice
Deane, Neal

Guided Paragraph Writing
Jupp/Milne

Youth Culture
Rabley, Stephen

Word for Word
Tribble

Langenscheidts Grammatiktafel Engli