Cita APA (7th ed.)

Evans V. Virginia & Dooley J. Jenny. (2009). Upstream Pre-Intermediate B1: Teacher's Book. Newbury, Express Publishing, 2009.

Cita Chicago (17th ed.)

Evans V. Virginia i Dooley J. Jenny. Upstream Pre-Intermediate B1: Teacher's Book. Newbury, Express Publishing, 2009, 2009.

Cita MLA (9th ed.)

Evans V. Virginia i Dooley J. Jenny. Upstream Pre-Intermediate B1: Teacher's Book. Newbury, Express Publishing, 2009, 2009.