Davis, S. M. (1987). Future perfect. Reading, Mass: Addison-Wesley.
Trích dẫn kiểu ChicagoDavis, Stanley M. Future Perfect. Reading, Mass: Addison-Wesley, 1987.
MLA引文Davis, Stanley M. Future Perfect. Reading, Mass: Addison-Wesley, 1987.
警告：這些引文格式不一定是100％准確.