B for Business
Cullen, William ua

English Grammar Style
Utz

English Grammar in Use Supplementar
Hashemi, Lousie

The Hidden Persuaders
Packard, Vance

Langenscheidts Grammatiktafel Engli

Censorship
Issues 27

Testing Material
Focus on Modern Business 2

Intermediate Listening
Timesaver

in writing
Skinner,Jody Daniel

If-Clauses & Co Die Nebensätze
Groß, Achim