STEWART, M. M. (1978). Business english and communication.--ed.5. McGraw Hill Book Co.
Lua i Stíl Chicago (17ú heag.)STEWART, Marie M. Business English and Communication.--ed.5. New York: McGraw Hill Book Co, 1978.
Lua MLA (9ú heag.)STEWART, Marie M. Business English and Communication.--ed.5. McGraw Hill Book Co, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.