Ibbotson, M. (2008). Cambridge English for Engineering. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Ibbotson, Mark. Cambridge English for Engineering. Cambridge, United Kingdom: Cambridge University Press, 2008.
Lua MLA (9ú heag.)Ibbotson, Mark. Cambridge English for Engineering. Cambridge University Press, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.