Donna, S. (2000). Teach business English. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Donna, Sylvie. Teach Business English. Cambridge, UK ; New York: Cambridge University Press, 2000.
Lua MLA (8ú heag.)Donna, Sylvie. Teach Business English. Cambridge University Press, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.