APA (7th ed.) Citation

Martin, J., & May, P. (1999). Knockout: First certificate. Workbook with key and tapescripts (1st published, 2nd impression.). Oxford University Press.

Chicago Style (17th ed.) Citation

Martin, Jackie, and Peter May. Knockout: First Certificate. Workbook with Key and Tapescripts. 1st published, 2nd impression. Oxford [etc.]: Oxford University Press, 1999.

MLA (9th ed.) Citation

Martin, Jackie, and Peter May. Knockout: First Certificate. Workbook with Key and Tapescripts. 1st published, 2nd impression. Oxford University Press, 1999.