Cullen, P., Jakeman, V., & French, A. (2014). The offical Cambridge guide to IELTS for academic & general training: Student's book with answers. New York: Cambridge university press.
Citação norma ChicagoCullen, Pauline, Vanessa Jakeman, e Amanda French. The Offical Cambridge Guide to IELTS for Academic & General Training: Student's Book With Answers. New York: Cambridge university press, 2014.
Citação norma MLACullen, Pauline, Vanessa Jakeman, e Amanda French. The Offical Cambridge Guide to IELTS for Academic & General Training: Student's Book With Answers. New York: Cambridge university press, 2014.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.