APA aipamena

Obee B. Bob & Evans V. Virginia. (2004). Upstream Advanced: Key. Workbook Student's Book. Newbury, Express Publishing, 2004.

Chicago Style aipamena

Obee B. Bob and Evans V. Virginia. Upstream Advanced: Key. Workbook Student's Book. Newbury, Express Publishing, 2004, 2004.

MLA aipamena

Obee B. Bob and Evans V. Virginia. Upstream Advanced: Key. Workbook Student's Book. Newbury, Express Publishing, 2004, 2004.

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