Business English for the 80's. (1980). Business English for the 80's. New Jersey: Prentice-Hall.
Trích dẫn kiểu ChicagoBusiness English for the 80's. Business English for the 80's. New Jersey: Prentice-Hall, 1980.
MLA引文Business English for the 80's. Business English for the 80's. New Jersey: Prentice-Hall, 1980.
警告：这些引文格式不一定是100％准确.