Cita APA (7th ed.)
Pauline Cullen. (2014). The Official Cambridge guide to IELTS: For academic and General Training. Cambridge university Press.
Cita Chicago (17th ed.)
Pauline Cullen. The Official Cambridge Guide to IELTS: For Academic and General Training. Cambridge,UK: Cambridge university Press, 2014.
Cita MLA (9th ed.)
Pauline Cullen. The Official Cambridge Guide to IELTS: For Academic and General Training. Cambridge university Press, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.