Looking at literature
Woxbrandt / Kunze

Tourism and Catering
Wood, Neil

Wirtschaftswörterbuch 1 E/D
Eichborn, Reinhart von

Business Objectives
Hollett, Vicki

English Grammar excersise
Hoffmann/schmidt

Photo Dictionary
Rosenthal/Freeman

Smile IV
Lichtenwagner, Claudia

Play the Role
Harris, Peter

Dictionary of Common Errors
Heaton/Turton

English Grammar Style
Utz