Visual Dictionary
Merriam-Webster's

Essential Grammar in Use
Murphy

A Commercial Course
Eckersley/Kaufmann

Lernhilfe Engisch 2
Wimmer, Reinhart

Basic English Usage
Swan, Michael

German-English Prose Translation
Snell

B for Business
Cullen, William ua

South Africa Since 1948
Hayward, Jean

Reading Lessons
Timesaver

So bestehe ich das Abitur
Englisch, Mentor