Doff A. Adrian & Jones C. Christopher. (1997). Language in use. Upper-Intermediate: Self-Study Workbook with answer key. Cambridge, Cambridge University Press, 1997.
Chicago Style (17th ed.) CitationDoff A. Adrian and Jones C. Christopher. Language in Use. Upper-Intermediate: Self-Study Workbook with Answer Key. Cambridge, Cambridge University Press, 1997, 1997.
MLA (9th ed.) CitationDoff A. Adrian and Jones C. Christopher. Language in Use. Upper-Intermediate: Self-Study Workbook with Answer Key. Cambridge, Cambridge University Press, 1997, 1997.
Warning: These citations may not always be 100% accurate.