So spricht der Amerikaner
Langenscheidt

The Art of Teaching English
Morris

Guided Course
Jupp/Milne

Good, better, perfect!
Ahrer Andrea; ua

Increase your wordpower key
Woxbrandt / Kunze

Reading Lessons
Timesaver

Business and Commerce
Wood, Neil

Gesprächstraining Englisch
Seebauer/Rovina

Business Builder Modules 7, 8, 9
Emmerson, Paul

Longman Commercial Communication
Stanton/Wood