Brook-Hart, G., Jakeman, V., & Harrison, M. (2012). Cambridge English: Complete IELTS : Bands 5-6.5 : [B2] ([Ed. diverses].). Cambridge University Press.

Brook-Hart, Guy, Vanessa Jakeman, and Mark Harrison. Cambridge English: Complete IELTS : Bands 5-6.5 : [B2]. [Ed. diverses]. Cambridge: Cambridge University Press, 2012.

Brook-Hart, Guy, et al. Cambridge English: Complete IELTS : Bands 5-6.5 : [B2]. [Ed. diverses]. Cambridge University Press, 2012.