Doff A. Adrian & Jones C. Christopher. (2002). Language in USE. Pre-Intermediate: Self-Study Workbook with answer key (5th ed.). New York, Cambridge University Press, 2002.
Citace podle Chicago (17th ed.)Doff A. Adrian a Jones C. Christopher. Language in USE. Pre-Intermediate: Self-Study Workbook with Answer Key. 5th ed. New York, Cambridge University Press, 2002, 2002.
Citace podle MLA (9th ed.)Doff A. Adrian a Jones C. Christopher. Language in USE. Pre-Intermediate: Self-Study Workbook with Answer Key. 5th ed. New York, Cambridge University Press, 2002, 2002.
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