Harding, K. (1998). Going international English for tourism. New York: Oxford University press.
Trích dẫn kiểu ChicagoHarding, Keith. Going International English for Tourism. New York: Oxford University press, 1998.
MLA引文Harding, Keith. Going International English for Tourism. New York: Oxford University press, 1998.
警告：這些引文格式不一定是100％准確.