Evans V. Virginia & Dooley J. Jenny. (2009). Upstream. Intermediate B2: Workbook. Student's Book (5th ed.). Newbury, Express Publishing, 2009.
Chicagoスタイル(17版)引用形式Evans V. Virginia , Dooley J. Jenny. Upstream. Intermediate B2: Workbook. Student's Book. 5th ed. Newbury, Express Publishing, 2009, 2009.
MLA(9版)引用形式Evans V. Virginia , Dooley J. Jenny. Upstream. Intermediate B2: Workbook. Student's Book. 5th ed. Newbury, Express Publishing, 2009, 2009.
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