Citazione Stile APA (7a Edizione)

Evans V. Virginia & Dooley J. Jenny. (2007). Upstream Beginner A1+: Workbook. Student's Book. Newbury, Express Publishing, 2007.

Citazione stile Chigago Style (17a edizione)

Evans V. Virginia e Dooley J. Jenny. Upstream Beginner A1+: Workbook. Student's Book. Newbury, Express Publishing, 2007, 2007.

Citatione MLA (9a ed.)

Evans V. Virginia e Dooley J. Jenny. Upstream Beginner A1+: Workbook. Student's Book. Newbury, Express Publishing, 2007, 2007.