Downing, A. (1992). A university course in English grammar. New York: Prentice-Hall.
Trích dẫn kiểu ChicagoDowning, Angela. A University Course in English Grammar. New York: Prentice-Hall, 1992.
MLA引文Downing, Angela. A University Course in English Grammar. New York: Prentice-Hall, 1992.
警告:这些引文格式不一定是100%准确.