Ibbotson, M. (2008). Cambridge English for Engineering. Cambridge University Press.
Chicago-čujuhus (17. p.)Ibbotson, Mark. Cambridge English for Engineering. Cambridge, United Kingdom: Cambridge University Press, 2008.
MLA-čujuhus (9. p.)Ibbotson, Mark. Cambridge English for Engineering. Cambridge University Press, 2008.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.