APA aipamena

Scott, L., & Scott, D. (2003). Natural english: Upper - Intermediate workbook with key. Oxford: Oxford Univ. Press.

Chicago Style aipamena

Scott, Lyn, và David Scott. Natural English: Upper - Intermediate Workbook With Key. Oxford: Oxford Univ. Press, 2003.

MLA aipamena

Scott, Lyn, và David Scott. Natural English: Upper - Intermediate Workbook With Key. Oxford: Oxford Univ. Press, 2003.