Business Targets
Greenall

Business and Commerce
Wood, Neil

Education in Britain and America
Stenzel, Elke u.a.

Harrap's Easy English Dictionary
Pons

Grammetiktraining Englisch
Seebauer/Rovina

Basic English Usage
Swan, Michael

Basic Business Role Plays
Kerridge, David

English Grammar 1
Henrichs-Kleinen, Ellen

Elementary English Grammar
The Heinemann

Practice in Text Analysis