The official Cambridge guide to IELTS

MLA

Cullen, Pauline, Amanda French, and Vanessa Jakeman. The Official Cambridge Guide to Ielts : for Academic & General Training : Student's Book with Answers. Cambridge: Cambridge University Press, 2014.

APA

Cullen, P., French, A., & Jakeman, V. (2014). The official Cambridge guide to IELTS : for academic & general training : student's book with answers. Cambridge: Cambridge University Press.

Chicago

Cullen, Pauline, Amanda French, and Vanessa Jakeman. The Official Cambridge Guide to IELTS: For Academic & General Training : Student's Book with Answers. Cambridge: Cambridge University Press, 2014.