APA način citiranja

(2006).  Focus on grammar 4. An integrated skills approach.  Pearson Longman.

Čikaški stil citiranja

 Focus On Grammar 4. An Integrated Skills Approach.  Pearson Longman, 2006.

MLA način citiranja

 Focus On Grammar 4. An Integrated Skills Approach.  Pearson Longman, 2006.

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