Martin J. Jackie & May P. Peter. (2003). Knockout. First Certificate: Workbook with key and tapescripts (5th ed.). Oxford, Oxford University Press, 2003.
Citace podle Chicago (17th ed.)Martin J. Jackie a May P. Peter. Knockout. First Certificate: Workbook with Key and Tapescripts. 5th ed. Oxford, Oxford University Press, 2003, 2003.
Citace podle MLA (9th ed.)Martin J. Jackie a May P. Peter. Knockout. First Certificate: Workbook with Key and Tapescripts. 5th ed. Oxford, Oxford University Press, 2003, 2003.
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