Cita APA (7a ed.)
Doff, A., & Jones, C. (2004). Pre-intermediate language in use: Self-study workbook; with answer key. CUP.
Cita Chicago Style (17a ed.)
Doff, Adrian, y Christopher Jones. Pre-intermediate Language in Use: Self-study Workbook; with Answer Key. Cambridge: CUP, 2004.
Cita MLA (9a ed.)
Doff, Adrian, y Christopher Jones. Pre-intermediate Language in Use: Self-study Workbook; with Answer Key. CUP, 2004.
Precaución: Estas citas no son 100% exactas.