APA (7e ed.) Bronvermelding

Duckworth M & Turner R. (2008). Business Result. Upper-Intermediate: Class CDs. New York, Oxford University Press, 2008.

Chicago (17e ed.) Bronvermelding

Duckworth M en Turner R. Business Result. Upper-Intermediate: Class CDs. New York, Oxford University Press, 2008, 2008.

MLA (9e ed.) Bronvermelding

Duckworth M en Turner R. Business Result. Upper-Intermediate: Class CDs. New York, Oxford University Press, 2008, 2008.