DWIJATMOKO, B. (1990). Communicative grammar practice (for first year english department university students). Kanisius.
Čikaški stil citiranja (17. izdanje)DWIJATMOKO, B.B. Communicative Grammar Practice (for First Year English Department University Students). Yogyakarta: Kanisius, 1990.
MLA način citiranja (9. izdanje)DWIJATMOKO, B.B. Communicative Grammar Practice (for First Year English Department University Students). Kanisius, 1990.
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