Baugh, L. S., Fryar, M., & Thomas, D. A. (1998). How to write first-class business correspondence: The handbook for business writing. Friend's Book Corner.
芝加哥风格引文Baugh, L. Sue, Maridell Fryar, 与 David Allen Thomas. How to Write First-class Business Correspondence: The Handbook for Business Writing. New Delhi: Friend's Book Corner, 1998.
MLA引文Baugh, L. Sue, et al. How to Write First-class Business Correspondence: The Handbook for Business Writing. Friend's Book Corner, 1998.
警告:这些引文格式不一定是100%准确.