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.
Lua i Stíl Chicago (17ú heag.)Baugh, L. Sue, Maridell Fryar, agus David Allen Thomas. How to Write First-class Business Correspondence: The Handbook for Business Writing. New Delhi: Friend's Book Corner, 1998.
Lua MLA (8ú heag.)Baugh, L. Sue, et al. How to Write First-class Business Correspondence: The Handbook for Business Writing. Friend's Book Corner, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.