Bond, A., & Schuman, N. (2010). 300+ successful business letters for all occasions (3rd ed.). Barrons Educational Series, Inc..
Lua i Stíl Chicago (17ú heag.)Bond, Alan, agus Nancy Schuman. 300+ Successful Business Letters for All Occasions. 3rd ed. Hauppauge, NY: Barrons Educational Series, Inc., 2010.
Lua MLA (9ú heag.)Bond, Alan, agus Nancy Schuman. 300+ Successful Business Letters for All Occasions. 3rd ed. Barrons Educational Series, Inc., 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.