Evans V. Virginia & Dooley J. Jenny. (2009). Upstream. Intermediate B2: Student's Book (seventh ed.). Newbury, Express Publishing, 2009.
Citace podle Chicago (17th ed.)Evans V. Virginia a Dooley J. Jenny. Upstream. Intermediate B2: Student's Book. seventh ed. Newbury, Express Publishing, 2009, 2009.
Citace podle MLA (9th ed.)Evans V. Virginia a Dooley J. Jenny. Upstream. Intermediate B2: Student's Book. seventh ed. Newbury, Express Publishing, 2009, 2009.
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