APA aipamena

Gairns R. Ruth & Redman S. Stuart. (2002). Natural English. Intermediate: Class Audio CDs. New York, Oxford University Press, 2002.

Chicago Style aipamena

Gairns R. Ruth and Redman S. Stuart. Natural English. Intermediate: Class Audio CDs. New York, Oxford University Press, 2002, 2002.

MLA aipamena

Gairns R. Ruth and Redman S. Stuart. Natural English. Intermediate: Class Audio CDs. New York, Oxford University Press, 2002, 2002.