Basic Vocabulary
Ruff

Ask and Answer
Rohrauer/schönberger

Act It Out
Knight, Michael

Effective Meetings
Comfort, Jeremy

Business Objectives Teacher
Hollett, Vicki

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

Englisch Grammatik
Durchstarten

Focus Modern Business Testing 4/5

English Verbs and Tenses
Bourke, Kenna

Dictionary of New English 1963-1972
Barnhart