APA (7th ed.) Zitazioa

Conway, D., & Shirreffs, B. (2003). On Course for IELTS: Student's Book. Oxford University Press.

Chicago Style (17th ed.) Zitazioa

Conway, Darren, eta Brett Shirreffs. On Course for IELTS: Student's Book. Melbourne: Oxford University Press, 2003.

MLA (9th ed.) Zitazioa

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