Evans V. Virginia & Dooley J. Jenny. (2008). Upstream. Intermediate B 2. Test booklet. Newbury, Express Publishing, 2008.
Cita Chicago (17th ed.)Evans V. Virginia i Dooley J. Jenny. Upstream. Intermediate B 2. Test Booklet. Newbury, Express Publishing, 2008, 2008.
Cita MLA (9th ed.)Evans V. Virginia i Dooley J. Jenny. Upstream. Intermediate B 2. Test Booklet. Newbury, Express Publishing, 2008, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.