Baugh, L. (1998). How to write first class business correspondence. Viva.
芝加哥风格引文Baugh, L. How to Write First Class Business Correspondence. New Delhi: Viva, 1998.
MLA引文Baugh, L. How to Write First Class Business Correspondence. Viva, 1998.
警告：这些引文格式不一定是100％准确.