DOFF, A., & Christopher. (2001). Language in use: Pre-intermediate (Self-study workbook with answer key)/Adrian Doff and Christoper Jones. Cambridge University Press.
Chicago Style (17th ed.) CitationDOFF, Adrian, and Christopher. Language in Use: Pre-intermediate (Self-study Workbook with Answer Key)/Adrian Doff and Christoper Jones. Cambridge: Cambridge University Press, 2001.
MLA (8th ed.) CitationDOFF, Adrian, and Christopher. Language in Use: Pre-intermediate (Self-study Workbook with Answer Key)/Adrian Doff and Christoper Jones. Cambridge University Press, 2001.
Warning: These citations may not always be 100% accurate.