Ibbotson, M. (2009). Professional English in use: Engineering. Technical English for professionals. Cambridge University Press.
Chicago-referens (17:e uppl.)Ibbotson, Mark. Professional English in Use: Engineering. Technical English for Professionals. Cambridge: Cambridge University Press, 2009.
MLA-referens (9:e uppl.)Ibbotson, Mark. Professional English in Use: Engineering. Technical English for Professionals. Cambridge University Press, 2009.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.