Evans V. Virginia & Edwards L. Lynda. (2003). Upstream Advanced: Workbook Student's Book. Newbury, Express Publishing, 2003.
Chicago Style (17th ed.) CitationEvans V. Virginia and Edwards L. Lynda. Upstream Advanced: Workbook Student's Book. Newbury, Express Publishing, 2003, 2003.
MLA (9th ed.) CitationEvans V. Virginia and Edwards L. Lynda. Upstream Advanced: Workbook Student's Book. Newbury, Express Publishing, 2003, 2003.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.