Cotton, D. (2009). Market Leader: Upper Intermediate Business English Course Book (New Ed., 6th Impr.). Pearson Education Ltd.
Chicago-Zitierstil (17. Ausg.)Cotton, David. Market Leader: Upper Intermediate Business English Course Book. New Ed., 6th Impr. Harlow: Pearson Education Ltd, 2009.
MLA-Zitierstil (9. Ausg.)Cotton, David. Market Leader: Upper Intermediate Business English Course Book. New Ed., 6th Impr. Pearson Education Ltd, 2009.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.