Raman Singh. Business Communication 2nd Ed. Oxford.
Lua i Stíl Chicago (17ú heag.)Raman Singh. Business Communication 2nd Ed. Oxford.
Lua MLA (9ú heag.)Raman Singh. Business Communication 2nd Ed. Oxford.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.