Cita APA (7th ed.)

Conway D. Darren & Shirreffs B. Brett. (2004). On Course for IELTS: Teacher's Book. Victoria, Oxford University Press, 2004.

Cita Chicago (17th ed.)

Conway D. Darren i Shirreffs B. Brett. On Course for IELTS: Teacher's Book. Victoria, Oxford University Press, 2004, 2004.

Cita MLA (9th ed.)

Conway D. Darren i Shirreffs B. Brett. On Course for IELTS: Teacher's Book. Victoria, Oxford University Press, 2004, 2004.