Maris, A. (2016). Outcomes Upper Intermediate: Workbook Audio CD (Segunda edición.). National Geographic Learning Cengage Learning Company.
Čikaški stil citiranja (17. izdanje)Maris, Amanda. Outcomes Upper Intermediate: Workbook Audio CD. Segunda edición. Hampshire: National Geographic Learning Cengage Learning Company, 2016.
MLA način citiranja (9. izdanje)Maris, Amanda. Outcomes Upper Intermediate: Workbook Audio CD. Segunda edición. National Geographic Learning Cengage Learning Company, 2016.
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