Cita APA (7a ed.)

Evans V. Virginia & Edwards L. Lynda. (2007). Upstream. Advanced C1: Class CD 1. Newbury, Express Publishing, 2007.

Cita Chicago Style (17a ed.)

Evans V. Virginia y Edwards L. Lynda. Upstream. Advanced C1: Class CD 1. Newbury, Express Publishing, 2007, 2007.

Cita MLA (9a ed.)

Evans V. Virginia y Edwards L. Lynda. Upstream. Advanced C1: Class CD 1. Newbury, Express Publishing, 2007, 2007.