English for Customer Care
Richey,Roesmary

English Grammar in Use
Murphy

Business Objectives
Hollett, Vicki

Maturawissen Englisch
Wachter, Christian ua

Visual Dictionary
Corbeil/Mouser

English for Customer Care
Richey, Reosemary

Business and Commerce
Wood, Neil

BHS Englisch Übungsbuch 2./3.
Durchstarten

English Grammar in Use Supplementar
Hashemi, Lousie

Asterix in Britain