Trask, R. (2005). How to write effective emails. Penguin Books.
Lua i Stíl Chicago (17ú heag.)Trask, R.L. How to Write Effective Emails. London: Penguin Books, 2005.
Lua MLA (9ú heag.)Trask, R.L. How to Write Effective Emails. Penguin Books, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.