APA Citatie

Doff, A., & Jones, C. (1999). Language in use: Beginner : self-study workbook with answer key. Cambridge: Cambridge U. P..

Chicago Style citaat

Doff, Adrian, en Christopher Jones. Language in Use: Beginner : Self-study Workbook With Answer Key. Cambridge: Cambridge U. P., 1999.

MLA citatie

Doff, Adrian, en Christopher Jones. Language in Use: Beginner : Self-study Workbook With Answer Key. Cambridge: Cambridge U. P., 1999.