Geffner, A. B. (1991). Business letters the easy way. New York: Barron’s.
Trích dẫn kiểu ChicagoGeffner, Andrea B. Business Letters the Easy Way. New York: Barron’s, 1991.
MLA引文Geffner, Andrea B. Business Letters the Easy Way. New York: Barron’s, 1991.
警告:这些引文格式不一定是100%准确.