APA引文

Jeffner, A. B. (1991). Business Letters the Easy Way. :.

Trích dẫn kiểu Chicago

Jeffner, Andrea B. Business Letters the Easy Way. :, 1991.

MLA引文

Jeffner, Andrea B. Business Letters the Easy Way. :, 1991.

警告：这些引文格式不一定是100％准确.