John Reynolds. (2013). Cambridge Checkpoint English Workbook 1 ("New, Workbook".). Hodder Education.
Čikaški stil citiranja (17. izdanje)John Reynolds. Cambridge Checkpoint English Workbook 1. "New, Workbook". Hodder Education, 2013.
MLA način citiranja (9. izdanje)John Reynolds. Cambridge Checkpoint English Workbook 1. "New, Workbook". Hodder Education, 2013.
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