Bowman, J. (1979). Effective business correspondence. Confield Press.
芝加哥风格引文Bowman, J. Effective Business Correspondence. Sun Francisco: Confield Press, 1979.
MLA引文Bowman, J. Effective Business Correspondence. Confield Press, 1979.
警告：这些引文格式不一定是100％准确.