APA-Zitierstil (7. Ausg.)
Doff, A., & Jones, C. (2004). Pre-intermediate language in use: Self-study workbook; with answer key. CUP.
Chicago-Zitierstil (17. Ausg.)
Doff, Adrian, und Christopher Jones. Pre-intermediate Language in Use: Self-study Workbook; with Answer Key. Cambridge: CUP, 2004.
MLA-Zitierstil (9. Ausg.)
Doff, Adrian, und Christopher Jones. Pre-intermediate Language in Use: Self-study Workbook; with Answer Key. CUP, 2004.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.