Gower, R. (2006). Grammar in practice 6 (First edition.). Cambridge University Press.
Chicago-čujuhus (17. p.)Gower, Roger. Grammar in Practice 6. First edition. Cambridge: Cambridge University Press, 2006.
MLA-čujuhus (9. p.)Gower, Roger. Grammar in Practice 6. First edition. Cambridge University Press, 2006.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.