APA (7th ed.) Citation

Richards, J. C., & Bohlke, D. (2013). Interchange: Workbook 1 (4th edición.). Cambridge University Press.

Chicago Style (17th ed.) Citation

Richards, Jack C., and David Bohlke. Interchange: Workbook 1. 4th edición. New York: Cambridge University Press, 2013.

MLA (9th ed.) Citation

Richards, Jack C., and David Bohlke. Interchange: Workbook 1. 4th edición. Cambridge University Press, 2013.