Swan, M., & Walter, C. (1987). The Cambridge English course. New York: Cambridge University Press.
Trích dẫn kiểu ChicagoSwan, Michael, và Catherine Walter. The Cambridge English Course. New York: Cambridge University Press, 1987.
Deismireacht MLASwan, Michael, và Catherine Walter. The Cambridge English Course. New York: Cambridge University Press, 1987.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.