Cita APA (7a ed.)

Evans V. Virginia & Dooley J. Jenny. (2008). Upstream Pre-Intermediate B1: Teacher's Book. Newbury, Express Publishing, 2008.

Cita Chicago Style (17a ed.)

Evans V. Virginia y Dooley J. Jenny. Upstream Pre-Intermediate B1: Teacher's Book. Newbury, Express Publishing, 2008, 2008.

Cita MLA (9a ed.)

Evans V. Virginia y Dooley J. Jenny. Upstream Pre-Intermediate B1: Teacher's Book. Newbury, Express Publishing, 2008, 2008.