APA (7e ed.) Bronvermelding

Doff A. Adrian & Jones C. Christopher. (1998). Language in use. Intermediate: Self-Study Workbook with answer key. Cambridge, Cambridge University Press, 1998.

Chicago (17e ed.) Bronvermelding

Doff A. Adrian en Jones C. Christopher. Language in Use. Intermediate: Self-Study Workbook with Answer Key. Cambridge, Cambridge University Press, 1998, 1998.

MLA (9e ed.) Bronvermelding

Doff A. Adrian en Jones C. Christopher. Language in Use. Intermediate: Self-Study Workbook with Answer Key. Cambridge, Cambridge University Press, 1998, 1998.