APA (7th ed.) Citation

Doff, A., Smith, H., Thake, R., Brabben, C., & Lloyd, M. (2010). English unlimited: Pre-intermediate Teacher's Pack. B1. Cambridge University Press.

Chicago Style (17th ed.) Citation

Doff, Adrian, Howard Smith, Rachel Thake, Cathy Brabben, and Mark Lloyd. English Unlimited: Pre-intermediate Teacher's Pack. B1. Cambridge University Press, 2010.

MLA (9th ed.) Citation

Doff, Adrian, et al. English Unlimited: Pre-intermediate Teacher's Pack. B1. Cambridge University Press, 2010.