Citação norma APA

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

Citação norma Chicago

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

Citação norma MLA

Cullen, Pauline, et al. The Official Cambridge Guide to IELTS: For Academic & General Training : Student's Book with Answers. Cambridge University Press : Cambridge English Language Assessment, 2014.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.