Job Matters
Köstler, Maria Elisabeth

An Outline of English Literature
Thornley

The Mass Media
Lutz/Thompson

Language Reference for Business Enh
Brieger/Comfort

Großer Lernwortschatz Englisch
Hueber

Commercial Correspondence
Ashley, A.

Situational Grammar Practice

Living English Structure
Allan, W.Stannard

Cultural Encounters
Ford/Silverman

Advanced Exercises in Grammar 2
Thomson, A.J./ Martinet A.V.