APA (7th ed.) Citation

McGowen, B. B., & Richardson, V. V. (2005). Clockwise. Pre-intermediate: Classbook. University Press.

Chicago Style (17th ed.) Citation

McGowen, B. Bruce, and V. Vic Richardson. Clockwise. Pre-intermediate: Classbook. Oxford: University Press, 2005.

MLA (8th ed.) Citation

McGowen, B. Bruce, and V. Vic Richardson. Clockwise. Pre-intermediate: Classbook. University Press, 2005.