The Heinemann English Grammar

A Practical English Grammar
Thomson, A.J./ Martinet A.V.

English in Mind 3 Workbook
Puchta, Herbert / Stranks, Jeff

Muret-Sanders German-English
Langenscheidt's

Britain
O'Driscoll, James

International Business Role Plays
Kerridge, David

Dictionary of Common Errors
Heaton/Turton

Englisch für dich 2
Ribitsch, Horst

More False Friends
Breitkreuz

English for Presentations
Grussendorf, Marion