Englisch 10. Klasse
Duden

Amerikanisch compact
Rink

A Commercial Course
Eckersley/Kaufmann

Let`s Keep Talking
Ramsey

English for Customer Care
Richey,Roesmary

English Grammar Style
Utz

Business Focus Pre-Intermediate Wor
Grant, David; McLarty, Robert

English Grammar in Use Supplementar
Hashemi, Lousie

Telekolleg Englisch Band 1

Business Objectives
Hollett, Vicki