Citazione APA

Conway, D., & Shirreffs, B. (2003). On course for IELTS: Student book. Oxford University Press.

Stile di citazione Chicago

Conway, Darren, e Brett Shirreffs. On Course for IELTS: Student Book. Oxford: Oxford University Press, 2003.

Citazione MLA

Conway, Darren, e Brett Shirreffs. On Course for IELTS: Student Book. Oxford University Press, 2003.