Hewings, M. (2007). Advanced english grammar. Cambridge University Press.
Chicago-čujuhus (17. p.)Hewings, Martin. Advanced English Grammar. New Delhi: Cambridge University Press, 2007.
MLA-čujuhus (9. p.)Hewings, Martin. Advanced English Grammar. Cambridge University Press, 2007.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.