Gilbert, J. B. (1993). Clear speech: Student book (2ª ed.). Cambridge University Press.
Chicago-čujuhus (17. p.)Gilbert, Judy B. Clear Speech: Student Book. 2ª ed. United Kingdom: Cambridge University Press, 1993.
MLA-čujuhus (9. p.)Gilbert, Judy B. Clear Speech: Student Book. 2ª ed. Cambridge University Press, 1993.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.