Evans V. Virginia & Dooley J. Jenny. (2007). Upstream Intermediate B2: Student's Book. Newbury, Express Publishing, 2007.
Style de citation Chicago (17e éd.)Evans V. Virginia et Dooley J. Jenny. Upstream Intermediate B2: Student's Book. Newbury, Express Publishing, 2007, 2007.
Style de citation MLA (9e éd.)Evans V. Virginia et Dooley J. Jenny. Upstream Intermediate B2: Student's Book. Newbury, Express Publishing, 2007, 2007.
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