Reid, J. M., Jr, & Silleck, A. (1990). Better business letters: A self-instructional book to develop skill in writing (4th ed.). Addison-Wesley Publishing Company, Inc.
Lua i Stíl Chicago (17ú heag.)Reid, James M., Jr, agus Anne Silleck. Better Business Letters: A Self-instructional Book to Develop Skill in Writing. 4th ed. Reading, Massachusetts: Addison-Wesley Publishing Company, Inc, 1990.
Lua MLA (9ú heag.)Reid, James M., Jr, agus Anne Silleck. Better Business Letters: A Self-instructional Book to Develop Skill in Writing. 4th ed. Addison-Wesley Publishing Company, Inc, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.