Evans V. Virginia & Odee B. Bob. (2008). Upstream Upper Intermediate B2+: Workbook Student's. Newbury, Express Publishing, 2008.
Čikaški stil citiranja (17. izdanje)Evans V. Virginia i Odee B. Bob. Upstream Upper Intermediate B2+: Workbook Student's. Newbury, Express Publishing, 2008, 2008.
MLA način citiranja (9. izdanje)Evans V. Virginia i Odee B. Bob. Upstream Upper Intermediate B2+: Workbook Student's. Newbury, Express Publishing, 2008, 2008.
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