The Art of Teaching English
Morris

More False Friends
Breitkreuz

Business Targets
Greenall

English for Customer Care
Richey,Roesmary

Englisch Grammatik
Lang-Howard, Monica

So spricht der Amerikaner
Langenscheidt

The American Heritage Dictionary

We mean Business
Norman

Source Book for Teaching English
Lewis, Michael / Hill, Jimmie

Let's get moving
Gegier, Birgit