Doff A. Adrian & Jones C. Christopher. (1997). Language in use. Intermediate: Classroom Book. Cambridge, Cambridge University Press, 1997.
Čikaški stil citiranja (17. izdanje)Doff A. Adrian i Jones C. Christopher. Language in Use. Intermediate: Classroom Book. Cambridge, Cambridge University Press, 1997, 1997.
MLA način citiranja (9. izdanje)Doff A. Adrian i Jones C. Christopher. Language in Use. Intermediate: Classroom Book. Cambridge, Cambridge University Press, 1997, 1997.
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