Michael Duckworth. (2000). Countdown to first certificate ( Student's book ). Oxford: Oxford Univ. Press.
Trích dẫn kiểu ChicagoMichael Duckworth. Countdown to First Certificate ( Student's Book ). Oxford: Oxford Univ. Press, 2000.
MLA引文Michael Duckworth. Countdown to First Certificate ( Student's Book ). Oxford: Oxford Univ. Press, 2000.
警告:這些引文格式不一定是100%准確.