Cresci, M. W. (1993). Complete Book of Modern Business letters. New York: Reward Book.
Trích dẫn kiểu ChicagoCresci, Martha W. Complete Book of Modern Business Letters. New York: Reward Book, 1993.
MLA引文Cresci, Martha W. Complete Book of Modern Business Letters. New York: Reward Book, 1993.
警告：这些引文格式不一定是100％准确.