Ellis, M., & Johnson, C. (1994). Teaching business English. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Ellis, Mark, agus Christine Johnson. Teaching Business English. Oxford: Oxford University Press, 1994.
Lua MLA (8ú heag.)Ellis, Mark, agus Christine Johnson. Teaching Business English. Oxford University Press, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.