Ackroyd, S., Puchta, H., Stranks, J., Carter, R., & Lewis-Jones, P. (2005). English in mind: Workbook. Cambridge University Press.
Chicago Style aipamenaAckroyd, Sarah, Herbert Puchta, Jeff Stranks, Richard Carter, and Peter Lewis-Jones. English in Mind: Workbook. Cambridge: Cambridge University Press, 2005.
MLA aipamenaAckroyd, Sarah, et al. English in Mind: Workbook. Cambridge University Press, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.