APA (7th ed.) Citation

McCarthy, M., McCarten, J., & Sandiford, H. (2005). Touchstone 1: Workbook. Cambridge University.

Chicago Style (17th ed.) Citation

McCarthy, Michael, Jeanne McCarten, and Helen Sandiford. Touchstone 1: Workbook. Cambridge: Cambridge University, 2005.

MLA (9th ed.) Citation

McCarthy, Michael, et al. Touchstone 1: Workbook. Cambridge University, 2005.